Audience doesn't care about the actor's problems, only the character. An actor must turn their body over to the character. If they can't do that, they can't act. The actor is an entertainer. If you teach the body how to act , it will act.
Humanity is the secret in all acting.
It's telling the story in movement by finding what I call the pattern of behavior. To make a decision based not on investigating our inner psyche, but on our theatrical sense. We all try to act with our intellect, you can't do it, acting is an emotional experience. It's only a partial mental experience. Don't look for psychological conclusion as an actor.