Um. Being in a relationship makes me realise how a lot of hope in life is tied to certain brain chemicals

Getting into a fight really throws me back down in a pit where everything is dark and doomed.

I don't know if this is a reality check, or just normal sadness. Suddenly feeling I'm good for nothing. Can't achieve much. Am bound to fail. Full of resentment. Etc.

These are the things in life that I truly find confusing, I have spent most of my life trying to figure out what is real and what's just in my head. It's a very difficult state to be in. Makes living very exhausting when you're second guessing everything.