21 Days to a Big Idea!: Creating Breakthrough Business Concepts by Bryan Mattimore Summary

1. Discover inventive passion by revisiting childhood aspirations for problem-solving inspiration.
2. Combine unrelated concepts with the “And” technique for instant idea generation.
3. Use 20 probing questions to reframe creative challenges and spark breakthroughs.
4. Maintain a Big Idea Notebook to track and refine concepts over 21 days.
5. Leverage daily stimuli like random words to force unconventional connections.
6. Prioritize quantity over quality initially to surface unexpected “big idea” candidates.
7. Test ideas through billboarding exercises to gauge market viability quickly.
8. Apply nine creative frameworks like “problem reversal” to escape idea ruts.
9. Schedule structured brainstorming sessions to mirror Mattimore’s corporate innovation process.
10. Validate ideas by assessing feasibility, originality, and passion alignment simultaneously.

『21 Days to a Big Idea!』の著者について

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!』に関するよくある質問

What is 21 Days to a Big Idea by Bryan Mattimore about?

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.

Who should read 21 Days to a Big Idea?

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.

Is 21 Days to a Big Idea worth reading?

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.

What are the key creative thinking strategies in 21 Days to a Big Idea?

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.

How does the 21-day process work?

The program splits into four phases:

• Finding passion (Days 1–4): Identify personal or professional challenges.
• Opportunity spotting (Days 5–9): Use five strategies to uncover idea gaps.
• Idea generation (Days 10–18): Apply nine techniques to brainstorm concepts.
• Selection and refinement (Days 19–21): Evaluate and develop the most promising ideas.

What is the “Bright Ideas” game mentioned in the book?

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.

What are the main criticisms of 21 Days to a Big Idea?

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.

How does this book compare to other innovation guides?

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.

Can 21 Days to a Big Idea techniques apply to personal goals?

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.

What real-world examples does Bryan Mattimore include?

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.

How does the book help evaluate which ideas to pursue?

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.

Does 21 Days to a Big Idea address common creative blocks?

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.