The Art Of Self-Architecture (How To Change Who You Are)
Koe frames identity, or 'character,' as an intellectual structure built over time, mostly assembled unconsciously in childhood as a byproduct of environment rather than chosen deliberately. His claim is that most self-improvement fails at the habit layer because habits are downstream of identity: you don't rise to the level of your goals, you fall back to the level of who you believe you are — so a new habit stacked on an unchanged self-concept tends to erode back to baseline.