
Unlock your creative genius in just 21 days! Bryan Mattimore's breakthrough method, endorsed by startup guru Bob Dorf, has helped Fortune 500 giants like Kraft and Pepsi generate over $3 billion in new sales. What's your "Worst Idea" that might become your million-dollar opportunity?
Bryan W. Mattimore, author of 21 Days to a Big Idea, is an innovation strategist and ideation expert who has shaped corporate creativity for Fortune 500 giants like Pepsi, Sony, and Unilever. He specializes in business psychology and entrepreneurial thinking, and his book distills decades of hands-on experience into a practical guide for developing breakthrough concepts.
A Dartmouth-educated psychologist, Mattimore co-founded the Growth Engine Company, where his facilitated brainstorming sessions and innovation projects have driven over $3 billion in annual client revenue.
His methodology combines behavioral science with real-world applications, reflected in his earlier works Idea Stormers: How to Lead and Inspire Creative Breakthroughs and 99% Inspiration—the latter selected as the American Management Association’s Book of the Year.
As a Senior Fellow at The Conference Board and instructor at Caltech Executive Education, Mattimore trains leaders in systematic creativity. His frameworks are implemented by organizations worldwide, with 21 Days to a Big Idea serving as both a standalone resource and companion to his innovation game Bright Ideas.
21 Days to a Big Idea outlines a structured 21-day process to generate breakthrough business concepts through creative thinking strategies. Bryan Mattimore, a Fortune 500 innovation consultant, provides daily exercises to help readers identify opportunities, brainstorm ideas, and refine high-potential concepts. The book emphasizes practicality, with tools applicable to startups, corporate innovation, and personal challenges.
Aspiring entrepreneurs, corporate "intrapreneurs," and professionals seeking systematic creativity techniques will benefit most. The book suits those needing actionable methods to overcome idea stagnation or validate business concepts. Its step-by-step approach is ideal for readers preferring hands-on guidance over theoretical advice.
Yes, for its concise, actionable framework to unlock creativity. While some may find the 21-day commitment challenging, reviewers note its cost-effectiveness and potential to spark viable ideas. The blend of Mattimore’s Fortune 500 experience and practical exercises makes it a valuable resource for structured innovation.
The book teaches techniques like problem reframing, random stimulation, and analogical thinking. Mattimore emphasizes collaborative ideation, encouraging discussions with diverse thinkers to refine concepts. These methods aim to surface unconventional solutions by combining logic with playful exploration.
The program splits into four phases:
Invented by Mattimore, Bright Ideas is a creativity-training game designed to simulate brainstorming sessions. It helps users practice lateral thinking and problem-solving in a timed, gamified format. While not detailed in the book, it reflects Mattimore’s focus on structured yet playful ideation.
Some reviewers caution that the 21-day timeline may feel rushed for complex challenges, and the corporate-focused examples might not resonate with solo entrepreneurs. However, most praise its disciplined approach as a starting point for overcoming creative blocks.
Unlike theoretical guides, 21 Days prioritizes action over analysis. It contrasts with books like The Lean Startup by focusing specifically on ideation rather than execution. Mattimore’s Fortune 500 case studies offer a corporate perspective rarely seen in startup-centric innovation literature.
Yes. The tools for reframing problems and combining ideas are adaptable to career transitions, side hustles, or creative projects. Mattimore stresses that the same strategies used for corporate innovation can unlock personal breakthroughs.
The book references Mattimore’s work with companies like Ford, Pepsi, and Unilever, detailing how his methods led to $3 billion in new sales. Examples include product innovations, marketing campaigns, and process improvements derived from structured brainstorming.
Days 19–21 focus on criteria like feasibility, market potential, and passion alignment. Mattimore advises ranking ideas using weighted scoring and stress-testing concepts through peer feedback. This eliminates overly complex or niche proposals early.
Yes. Techniques like “assumption reversal” and “worst-idea brainstorming” are designed to bypass mental barriers. Mattimore argues that disciplined daily practice—even in short sessions—builds momentum to overcome procrastination or self-doubt.
Erlebe das Buch durch die Stimme des Autors
Verwandle Wissen in fesselnde, beispielreiche Erkenntnisse
Erfasse Schlüsselideen blitzschnell für effektives Lernen
Genieße das Buch auf unterhaltsame und ansprechende Weise
Innovation isn't just for the naturally gifted—it's a skill anyone can develop.
Einstein claimed he'd spend 55 minutes defining a problem and only 5 minutes solving it.
What's the problem?
The close observation of little things is the secret of success.
When one door closes another door opens.
Zerlegen Sie die Kernideen von 21 Days to a Big Idea! in leicht verständliche Punkte, um zu verstehen, wie innovative Teams kreieren, zusammenarbeiten und wachsen.
Erleben Sie 21 Days to a Big Idea! durch lebhafte Erzählungen, die Innovationslektionen in unvergessliche und anwendbare Momente verwandeln.
Fragen Sie alles, wählen Sie Ihren Lernstil und gestalten Sie Erkenntnisse, die wirklich zu Ihnen passen.

Von Columbia University Alumni in San Francisco entwickelt
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Ever wondered why some people consistently generate groundbreaking ideas while others struggle to think beyond the obvious? Innovation isn't reserved for the naturally gifted - it's a skill anyone can develop through deliberate practice and proven techniques. When Columbia Business School professor Bob Dorf grew frustrated with the mediocre ideas his students were producing, he challenged Bryan Mattimore to create a workshop that would teach people how to generate truly breakthrough business ideas. The resulting 21-day program has since transformed how entrepreneurs and corporate teams approach innovation by combining psychological insights about creative thinking with practical, repeatable techniques anyone can learn - regardless of their natural creative inclination. This methodology has become required reading at leading business schools and transformed innovation practices at companies like PepsiCo and Disney. The journey to developing your own big ideas begins with understanding that creativity is a muscle that can be strengthened through consistent exercise.
The journey to breakthrough ideas begins with specific visualization. Rather than vague aspirations like "I want to create something innovative," imagine concrete outcomes: "My Big Idea Club has invented three kitchen products we'll be selling on QVC next year." This creates a success mentality that guides your creative process. Create a "success footprint" by identifying characteristics of successful ideas before conceiving them. By answering questions about your yet-to-be-conceived big idea, you establish a framework that attunes your intuition to recognize opportunities. Following Edison's example of keeping notebooks of "things doing and to be done," identify at least 50 potential innovation areas. Einstein reportedly spent 55 minutes defining a problem and only 5 minutes solving it - highlighting how identifying worthwhile problems requires as much creativity as solving them. This approach has produced everything from small innovations to billion-dollar companies like Facebook and Uber. To develop this skill, repeatedly ask: "What's the problem?" Identify twenty different problems, from the mundane (misplacing remotes) to the significant (manufacturing inefficiencies). This trains your mind to spot opportunities hiding in plain sight. Even seemingly trivial problems have spawned successful enterprises like Biotene (for dry mouth) and PopSockets (solving tangled earbuds). Remember: a single problem can have multiple viable solutions - the "luggage fatigue" challenge spawned innovations from smart luggage to specialized carry-on delivery services. Additionally, addressing one problem often reveals more interesting opportunities, as when Square's initial mobile payment solution led to a comprehensive ecosystem of business tools.
Innovation often means finding novel applications for existing technologies rather than inventing new ones. Consider Aerodesigns' inhalable vitamins and caffeine: could this become a "Deep Breathing Diet" combining yogic benefits with appetite control? To adapt technologies systematically, list their capabilities and combine them with your passion areas. Drones can fly above traffic and deliver items - potentially becoming medical emergency drones with defibrillators or "flying lifeguard" drones for swimmers in trouble. This approach extends to business models too. The subscription model now applies to software, meal kits, and styling services. Netflix evolved from DVD rentals to streaming, while Amazon transformed its internal infrastructure into AWS, now dominating cloud services. Businesses that save people time or money offer universal appeal. When Michael Shopenn needed a hip replacement costing $78,000 in the US, he found a Belgian hospital charging just $13,660, including travel costs. Use the Questioning Assumptions technique to challenge conventional thinking and develop cost-saving concepts. Time-saving businesses like GetControl.net help executives manage email more efficiently, saving them 15 workdays annually. Other examples include meal prep services saving 10+ hours weekly and virtual assistant services reducing administrative tasks by 70%. When developing these ideas, quantify the savings - specific numbers like "saves $10,000" or "saves 15 minutes per day" are more compelling than vague efficiency promises. Look for "pain points" where people experience frustration, as these often represent untapped opportunities.
Creativity declines dramatically with age-George Land's NASA study showed 98% of five-year-olds test at genius creativity levels, dropping to just 12% by age fifteen. We can recapture childhood's imagination through specific techniques: The "wish technique" encourages impossible, magical wishes that violate natural laws. Create twenty outlandish wishes, then ask: "How can I make this impossible wish real?" For example, wishing for house paint that never needs repainting might inspire biomimetic "living paint" solutions based on peacock feather regeneration. The Questioning Assumptions technique uncovers opportunities by challenging fundamental beliefs. At Unilever, Gary Fraser questioned whether toothpaste must come in a tube, leading to Mentadent's dual-chamber dispenser-creating a $150 million business. The Worst Idea technique begins with generating truly awful concepts, then transforming them into good ones. "Extra-watery soup" might inspire on-the-go cold soups with high water content as meal replacements. After generating ideas, the Billboarding method develops concepts into propositions with three elements: a headline, a visual, and a tagline or reason to believe. This clarifies the idea and reveals whether its benefit is truly compelling.
Successful innovation begins and ends with customer input. While formal research can be expensive, several affordable alternatives exist: First, create prototypes for concrete feedback. Dr. Scholl's used simple cardboard mockups that revealed the need for both venting and moisture-wicking features. Second, talk with different people at different stages - starting with experienced users for category insights, then expanding to diverse potential markets. Craftsman identified opportunities with women and specialized tool sets by broadening their research audience. Third, observe people using your product in real environments. Prestone's car wash/wax research in parking lots revealed critical insights about application and messaging that laboratory testing would have missed. Visual techniques help develop concepts into business propositions. The "creative war room" approach - covering walls with images, notes, and connections - helps visualize all components simultaneously. This externalization crystallizes ideas and gives your subconscious time to make surprising connections. The opportunity redefinition technique transforms challenges into possibilities by selecting three key words in your challenge statement and generating alternatives. For example, "How do I promote I-MONE to prospective patients?" can become "How do travel agencies publicize I-MONE to retirees?" - suggesting joint marketing with tourism companies for medical procedures combined with vacations.
The techniques in this journey serve multiple purposes throughout the innovation process - from generating initial ideas to solving challenges in capital raising, manufacturing, sales, marketing, and logistics. Different methods address specific creative needs: Wishing and Questioning Assumptions tackle "impossible challenges"; Twenty Questions and Patent Prompts expand thinking; while Billboarding and creative war rooms facilitate implementation. Creativity isn't a mysterious gift - it's a skill developed through deliberate practice and specific techniques. By following this 21-day program consistently, you can generate innovative ideas that solve meaningful problems and create significant value. Innovation requires building a lightning rod through disciplined creative practice rather than waiting for inspiration to strike. The world's most successful innovators use systematic approaches to capture, develop, and implement ideas. With these tools in your creative arsenal, you're equipped to transform thoughts into world-changing innovations. The question becomes not whether you can generate the next big idea - but which of your many big ideas you'll pursue first.