I often feel the same way. One of the hardest things I try to do is to stop myself from thinking negatively about myself. "Negative self talk" reinforces itself. The more you do it, the more the neuropathways that use the negative thinking are reinforced, making it even harder to stop it. However, it makes little sense to say "just stop it" because that is a negative thought too. So like others in this string have shared, recognizing these thought as feelings that come and go is very useful. I would add, recognize that you are not your emotions, they are part of you, but not all of you.

Another thing you might try to do in order to change the neuropathways, is to try to think of some of the positive aspects of yourself. Remember those times when you felt good about yourself, you accomplished something, someone complimented you. And try to hold that feeling as long as you can. This will be difficult in the beginning, because your brain is conditioned to b e negative. The trick is to try to think as many positive thoughts as you think negative thoughts...its called equanimity. Again, it is not easy, but it is necessary.

Loving-kindness.