In The Analects, Confucius provides us with one of the earliest maps of human development.
The Master said, at 15 I set my heart upon learning
At 30, I had planted my feet firm upon the ground.
At 40, I no longer suffered from perplexities.
At 50, I knew what were the biddings of heaven.
At 60, I heard them with docile ears.
At 70, I could follow the dictates of my own heart; for what I desired no longer overstepped the boundaries of right.
For more information about the stages of life in different cultures and traditions, see Thomas Armstrong , The Human Odyssey: Navigating the 12 Stages of Life.