As the subject mentions, I used to automatically blame myself when I ran into some unpleasant or embarrassing or otherwise bad situation. I used to automatically blame myself with very critical internal self talk. One day I decided I'd blame others and not myself. So I explored that option for once.
This seems to have been a positive thing. I'm not saying it's an overnight life changer, but I think over years of saying "wait a sec, maybe THEY were wrong" I no longer automatically blame myself. This has led to a better self concept and increased confidence.
This sort of reminds me of a successful tiny bit of CBT that anybody can try.