Thankfully, life is a university. Everything that you do or experience can teach you something, triggering inside you new thoughts, insights and realizations. You might be inclined to forget or ignore experiences that did not go well. Don't. Learning from your mistakes and things that cause you pain is invaluable. The greatest lessons can come from the lowest moments in your life.
100 Things Successful People Do: Little Exercises for Successful Living (2016)