Looking back helps to see forward...
I am a big one for looking back at my actions and the results from said behaviors to learn and grow. While one can not live in the past, one should be reflective in order to see the truth about one's self. It is through being retrospective that it becomes possible to really come to know oneself and acknowledge both strengths and weaknesses. It allows for honesty which stirs ones ability to admit shortcomings and either ask for help or be willing to admit ignorance and open oneself for learning. In turn it allows you to make be good choices and sets a positive path to the future.