Anger turned towards oneself becomes depression.
Why would you ever need to be angry at yourself? You did your best, didn’t you, with the knowledge that you had? We all do. There’s no need for hindsight, or what ifs. You learn your lesson and you do better next time.

I will not allow anybody to make me feel guilty anymore!
I will not allow anybody to tell me what I should have done!
I will not allow anybody to make me feel bad!
I will not allow anybody to make me feel stupid or incompetent!
I will not allow anybody to patronize me!

In the words of Rage Against The Machine: Fuck you I won’t do what you tell me!
And in my own words: Fuck you I won’t think what you tell me!

Hmm. I think I’m finally reaching puberty. šŸ˜‰ And should probably be writing a song right now….