Once you say 'sorry' to Him - you are authorising and inviting Him into your mind and His thoughts will then come to you. Amazing new thoughts. Compelling thoughts. Trustworthy thoughts and you will then see your life in a much better light. His.
If you are praying and are wondering why nothing is happening - you should ask Him to tell you if you need to forgive. If there is unconfessed sin; then it is like a 'pause' button being pressed that only you can release.
God, i thank You for the times You have forgiven me and I felt the immediate benefits. I thank You for the times when You stepped in because it was a habit of sin in my life I was powerless alone to conquer. I thank You for what You have taught me so far because it has blessed me so much. I thank you for stepping in and showing me the areas in my life that I was blind to and letting me see them. You are wonderful. Thank You. Amen.