How to Read a Self-Help Claim (effect sizes, replication, and testing it on yourself)

The toolkit for judging a decision by its process instead of its outcome. This lesson points the same toolkit at the advice itself: how to tell a claim that will help you from one that only sounded good on a stage.

Before you start. This track has already debunked three famous claims: the 10,000-hour rule in Deliberate Practice (how expertise is actually built), the 21-day habit in Habits & Behaviour Change (the loop that runs you), and the single tank of willpower in Energy, Goals & Recovery (manage energy, not time). Mental Models & Decision-Making (thinking about thinking) taught you to judge the process behind a choice, not how it turned out. This lesson turns those three debunks into a method you can run on the next claim yourself.