The minute that we change our minds, and stop giving power to the past, the past with its mistakes loses power over us.
Your automatic creative mechanism is teleological. That is, it operates in terms of goals and end results. Once you give it a definite goal to achieve, you can depend upon its automatic guidance system to take you to that goal much better than "you" ever could by conscious thought. "You" supply the goal by thinking in terms of end results. Your automatic mechanism then supplies the means whereby.
Realizing that our actions, feelings and behaviour are the result of our own images and beliefs gives us the level that psychology has always needed for changing personality.
Study the situation thoroughly, go over in your imagination the various courses of action possible to you and the consequences which can and may follow from each course. Pick out the course which gives the most promise and go ahead.