"That's the self-doubt that it's feeding on and what I need to fight back."

Yes -- now let's talk about the correct form of fighting back.

It is not "I don't want to feel self-doubt so I will suppress that feeling."

It is, "The self-doubt is valuable -- it's pushing me to improve."

The AI is never going to be able to say what you really mean. But it may inspire you to push harder to improve your ability to do that.