How to Clear Negative Beliefs That Hurt You

I was just beating myself up and being frustrated for like past mistakes I had made, or for this inner feeling of like, you don't deserve this, you're not good enough. And it was once I pinpointed that kind of like negative self-talk, those kind of limiting beliefs that I think I was really able to start climbing out of that. It's always worthwhile to kind of just go back, figure out like, do you have any of these beliefs? What are these beliefs? And are they helping you or are they harming you?