Real change doesn't come from believing you can do it. It comes from knowing you can't go back to the pain you've already lived through. When you recognize something was hell, you move.
You don't have to believe you can change or that you can find something different. You just have to make change necessary. Because you have to at least know that you can never do that again. That thing that crushed you, that thing that hurt you so badly, that kind of relationship with that kind of person. You just have to know for sure that you can never do that again. And when you come to that conclusion, that that was a special kind of hell you can never go back to. You don't need confidence. People like, if you were more confident, you would change. Actually, if you're in enough pain, you'll. It has nothing to do with confidence. In that moment, you just think, I never can go back to that.