For the man who makes strong promises to himself, keeps them for a week, misses one day, and writes the whole thing off. The restart cycle is the real problem, not the discipline.
It separates the commitment from the all-or-nothing trap. You define the full version, the minimum version, and the return move before you start — so a bad day doesn't automatically become an abandoned commitment.
Use it when you want self-command under friction, not another fragile promise.