The central move is a reversal: stop demanding that life make sense in general, and start asking what this specific moment demands of you.
Happiness and success are treated as unreliable targets. Chase them directly and they become slippery; orient toward responsibility and they can appear as side-effects.
Suffering is not praised, and tragedy is not romanticized. But when circumstances cannot be changed, the remaining question is the stance you take—and what kind of person you allow yourself to become.
The memoir comes first because theory without pressure is cheap. The ideas are meant to earn their right to exist.