My policy is to learn from the past, focus on the present, and dream about the future. I'm a firm believer in learning from adversity. Often the worst of times can turn to your advantage - my life is a study of that.
Case in point: Take adversity and make it an asset.
I don't think I changed a lot although I learned a lot. Adversity can be a wonderful teacher. Some people can't handle the pressure of it. For me it was a great thing. I learned about myself going through tough times. I guess I learned well.