Self-critical and Need for Validation vs. Delusional

I continue to be critical about my performance at work. I find evidence for it to prove my belief, so that even though I know intellectually that I can change that thought, I don’t truly believe it yet. I’ve tried to switch to I’m doing awesome, but it hasn’t landed. Even bridge thoughts have not worked (e.g “I’m open to I’m doing okay” “I have a job”).

I want to feel better about work and how I’m doing. What would your advice be for me?