Again

What is it about repetition that makes us who we are, or who we are not? Do we repeat the same mistakes because we have to? Our brains know no other way? We haven't learned the lessons that our pasts have tried to teach us? We have more to learn from more mistakes? When will we change? When we want to? We all say the world is constantly changing. We also say that life repeats itself. A cycle of circles we live in. All are different, yet all are shaped the same. Make one circle, go around again. Trees grow this way. Seasons go this way. Birth, life and death go this way. Why do I want something better for myself, when repetition is life? How often is the word "again" used in a positive context?