A demon’s not necessarily the right answer to that though, it’s like saying “Can someone give me a drill that will help me fix this hole in my bucket?”
I mean yeah sure you can drill screws in to hold a patch but you just created more problems. It’s just not the perfect tool for the job, unless you’re already a drilling maestro and can carefully patch the thing.
Doubtful, but you can change your personality if you truly WANT to.
Take a look at this and then dial it up to 11:
You make choices constantly, what to think, and thought > belief > emotion (mental state, over time) are all linked.