I was talking about my fears and concerns about finding a new job and she interrupted me and (in my opinion) scolded me. She said, "If no one else is going to say this, I guess I have to because I cannot stand the way you are talking so negatively about yourself. You are being so cruel and you need to stop it
I don't know about her approach. I wasn't there. I'm also not a trained therapist. So, no opinion on how she chose to handle it. Not enough information, for me.
When I read what you wrote, one of the things I wondered is why you're already looking for a new job, instead of dealing with the negative job review. No one likes criticism, but it's a chance to learn. When you've changed jobs that much, unless you WANT to change jobs that much (and you SAID you got fired), it seems like it might be good to try to see if there's a pattern. Maybe you, for some reason, keep landing jobs in "bad places to work". If so, is there a reason for that pattern? Maybe, for some reason, you have a problem getting along in a lot of work places. Again, if that's the case, what are the reasons? If there are reasons, are they things you CAN change and might want to change, or are they things that just are the way they are? If that's the case, what can you do differently to get more stability in your work life?
Your reaction to the T was feeling defensive, if I understand correctly. You felt like you should defend yourself for being hard on yourself? Is that right? Does that mean that you disagree that the self criticism is excessive? Do you feel like being that hard on yourself serves a useful purpose? Now that you've had a chance to think about it, do you STILL think being that hard on yourself is "right" and/or useful? In fact, I'm kind of curious about how much time you've spent thinking about the comments the T made and how much time you've spent "defending yourself", even in your own mind?
If it turns out that you have some issues you need to work on, that does NOT make you a "bad person". It's kind of a waste of energy to spend much energy, beating yourself up anyway. If you have some issues that you could work on to improve your work life, all that makes you is human and it means there's a chance life can be better. Somehow, you'd have to find out what those issues are. I don't see how having your feelings validated gets you there, but maybe I just don't see it.
Again, I don't have the information to know if this has any merit, but, some people react to criticism by running themselves down. Lots of possible reasons for that. A job isn't therapy. In a job, if there's a problem, if needs to be solved and going on about what an awful, worthless person you are does NOT solve the actual problem. There may have been a time in your earlier life where running yourself down DID solve the problem. (Probably was, in fact.) But that's not now and it's not at work. All of that is stuff best worked on in therapy. There's a pretty good chance the process is going to involve accepting that there are better ways of looking at things and doing things than what you've come up with so far. And also that you deserve to succeed. All of which probably means listening to stuff you may not be comfortable hearing.