Instead of just accepting the critical thoughts, I look at them individually and critically. Notice how "primitive" and juvenile they are, "You're dumb!" or, "That's stupid", and how they are wholly without examples or explanation? "You" are smarter than they are! Either make yourself laugh by talking back to them on their level: "No, you're dumb!"; or ask them questions, "Exactly what is "stupid"? How is it stupid?"; or deliberately misunderstand them and act puzzled: "I don't think I can be stupid, I graduated high school and my grades were okay; wouldn't the whole school system and all my teachers have to be stupid to pass me?"

But get individual with the accusations, put-downs, and fears and learn to laugh and shrug at them and to take them on one-at-a-time instead of as a galactic group. I was afraid to ride buses and felt that was ridiculous but, really, I didn't have to ride buses so why was I spending so much time/energy feeling bad about myself about that little thing? How does what they are accusing you of fit into your life? I use to get depressed and anxious in the night laying in bed worrying, that I was going to end up 85 and alone and living in filth and clutter just because I'd noticed the door lintel had a thick rime of dust on it. So, I resolved that next morning when I got up I'd dust the door lintel (and did)! Problem solved and I felt good for having done something.

Act on your fears instead of just fearing them. Part of fear is the fear of being afraid, worrying about worrying :-) When you do something, anything, that makes the fear fall back some. Sure you'll have to do the dishes again but when you do them now, all the worry and upset and energy that went into not doing them for the last month goes away for a bit! Decide to do "something" about some concrete fear or another for 15 minutes a day and turn on a timer. Instant feel better in only 15 minutes. Usually the act of working on something wakes up imagination and brain cells so we get more interested or curious or follow-on to what we're doing? Things become possible when we get to doing instead of just thinking/worrying. Get out of your head, if only to list stuff on paper.