After midlife, one falls back on C G Jung and determines that the first years of life were in themselves symbolic.
To learn a profession (calling) doesn't mean that you are called. To obtain money doesn't mean that you are rich. To marry doesn't mean that you have learned to love. To build a house doesn't mean that you are at home.
All the things you did until you turned forty confront you again after midlife as a task, but this time inwardly.