A Teacher
BJ Fogg
Fogg Behavior Model (B=MAP) and Tiny Habits
The transmission
Brian Jeffrey “BJ” Fogg (born August 1963) is an American behavioral scientist and a researcher at Stanford University, where he founded and directs the Behavior Design Lab (formerly the Persuasive Technology Lab). Working at the intersection of psychology and technology, Fogg developed a formal account of what makes any behavior happen, summarized in the equation B = MAP: a Behavior occurs when Motivation, Ability, and a Prompt converge at the same moment.
He first formalized this as B = MAT (with “T” for Trigger) in the early 2000s and later refined it to “Prompt.” The model became foundational to the design of habit-forming consumer products. Fogg is also the originator of the Tiny Habits method, published in his 2020 book Tiny Habits: The Small Changes That Change Everything.
The method counsels starting with behaviors so small they require almost no motivation (for example, doing two push-ups after using the toilet), anchoring each new habit to an existing routine, and celebrating immediately to wire in a positive emotion.
For the mind-power lineage, Fogg supplies a rigorously empirical mechanism for how repeated small actions install durable patterns, and how emotion and attention, not willpower, are the levers of lasting change. His work is a touchstone of the “behavior design” school that James Clear and many product designers later built upon.
What they gave
The Fogg Behavior Model (B=MAP): Names the three conditions (Motivation, Ability, Prompt) whose convergence produces any behavior, giving change a diagnosable structure.
- Tiny Habits method: Shows that shrinking a behavior to the point of near-effortlessness is the reliable path to durable habit formation.
- Anchoring and celebration: Establishes attaching new behaviors to existing routines, and immediate positive emotion, as the engine that wires habits in.
- Behavior design as a discipline: Helped found the academic and industry field that studies how environments and prompts shape repeated action.
The line they stand in
Influenced by: Stanford’s persuasive-technology research program; behavioral psychology and the behaviorist tradition (Skinner); experimental work on motivation and triggers.
- Influenced: James Clear’s Atomic Habits; the habit-app and product-design industry; the international Tiny Habits coaching and practitioner network.
Revelations they taught
Essential Works
- Tiny Habits: The Small Changes That Change Everything2019