“There is but one truly serious philosophical problem, and that is suicide. Judging whether life is or is not worth living amounts to answering the fundamental question of philosophy.”
From Plato through Camus, philosophers have tried to couple together a life-view together with Threefold. Life-view, final desideratum, and the why which glues them together.
Related concepts are meaning and purpose.
I have a paper on him capturing his thing.
Wisdom of Life and his eudaimonology will be key, among other things.