According to the Michael Teachings we evolve through five soul ages: Infant, Baby, Young, Mature, and Old.
“Each of these soul ages offer various lessons and perspectives to explore during the life. One soul age is not better than the other, only different.” – Micheal Teachings
What are the Micheal Teachings? See the video below:
If you want to learn more about life and the purpose of it (and why we have so many problems) you should check out the One Light materials by Jon Whistler.
This work ties in with the Micheal Teachings (to some degree) but comes from an even higher source, therefore, gives us a more profound view on life.