We all go through phases in life. Some last longer than others. The worst of those phases, occur when you are insecure and over concerned with acceptance. As you get older you care less what others think of you, more concerned with maintaining image on your own merits not by what others say about you. Don’t worry about the past, if you keep living in the past, the same will occur over and over again and you will never be able to move forward. Why they tell you not to harp on the past, or talk about the past, because it keeps you from being present. If you have difficulty being present, makes it hard to plan ahead and prepare for the future. Concentrate on what’s most important to you in your life, and are you doing what you need to do in order to be successful in life.