One example would be Richard Rohr, Franciscan priest and renowned authority on spirituality. He has spoken and written a lot about what he calls the two halves of life (www.fallingupwardbook.com/video). When I attended a retreat lead by him last November he made reference to this many times. He explained it primarily through a diagram with a mountain on it; the upward slope signified the first half of life and the downward slope, the second half. The first half was inevitably about creating your own identity, defining your place in the world, distinguishing yourself from others. The second half, the downward slope, was about letting the identity you've created crumble and be replaced by an even deeper identity founded in a sort of weakness and surrender. Sounds easier said than done, but, according to Richard Rohr, this is the pattern of a life well-lived.
I found this pattern well-illustrated in a quotation I very recently read by Peter Coyote from an interview with him that appeared in the June issue of The Sun Magazine (thesunmagazine.org). He said, "I've reached the place where I do what I do, not because I think I will win, but because it's the only way I know how to be human." There you have it! The two halves of life! The first half about winning, the second about just being, being human.