Worry is a pernicious pattern of negative thinking that takes a stranglehold on your life and can lead to serious and debilitating anxiety disorders, which are likely worry on steroids.
Anxious people can become consumed with the helplessness they feel in a what-if world. In a what-if world, disasters wait around every corner.
Your consistency in living a godly life is more important than a single past transgression. So, when you make a mistake, feel the anger, fear, or guilt, admit it, confess it, make amends, and move on — fast!