The 12 Levers

'Clear, thoroughly researched and well-written. Please read it before you buy another self-help book' – Barry Schwartz, author of The Paradox of Choice

Experts Spencer Greenberg and Jeremy Stevenson have done the work so you don’t have to.
After analysing more than 100 self-help books and 23 different therapies, they uncovered a
hidden truth: all effective self-help techniques collapse into just 12 high-level approaches.
Now, they’ve distilled those proven methods into a single, actionable guide: The 12 Levers.

Stripped of trends, fads and confusing jargon, The 12 Levers hands you the exact tools you need to navigate life's challenges. You will discover how to:
Find your direction by clarifying your intrinsic valuesConquer fear with the most scientifically validated anxiety approach in the worldFix your sleep using the most effective techniques from top sleep therapistsMaximise your downtime with fulfilling ‘glad-you-did-it’ activitiesGet more done by understanding 'The Productivity Equation'Break the cycle of self-consciousness using the Attention Training Technique
Intuitive and easy to implement, The 12 Levers isn't just another self-help theory – it's your complete psychological toolkit for a better life.

Spencer Greenberg PhD is a mathematician and entrepreneur specializing in psychology. He’s the founder of Spark Wave, a research organization creating psychology-based products, and Clearer Thinking, which offers self-improvement tools. He hosts the Clearer Thinking podcast, ranked in the top 1% globally. He has personally tested many self-improvement methods – using Cognitive Behavioral Therapy and bold exposure exercises to overcome social anxiety.

Jeremy Stevenson PhD is clinical psychologist with extensive experience. He’s worked with hundreds of clients and explored self-help deeply – both professionally and personally. He’s undergone therapy himself, crediting it with key personal growth. Jeremy has tried all major self-help methods, with some yielding lasting impact.

© 2026 Spencer Greenberg PhD and Jeremy Stevenson PhD (P) 2026 DK Audio