God loves you even though you're not perfect.
What to Do After a Mistake:
Confess to God. It will make you feel better.
Ask for His Forgiveness. Why? Because it helps you cut ties with the behavior when you express that you don't want to keep doing it.
Activate the Holy Spirit's help by inviting him into the heart of the mistake.
Look to scripture for answers. This will allow Jesus to lead you out and you can learn from your mistakes.
High Way Journal Users:
Use this post as a journal prompt to write to work through mistakes and write out prayers.
If you want to lighten the load, ask Holy Spirit to bring to mind any mistakes you haven't surrendered to God.
Write out thoughts, prayers, and the things you learned on the blank journal pages in the back.