The skill of "acting as if"

Actors do it all the time.

Christian Bale acted as if he was Batman knowing pretty sure that he wasn't. And we believed him. We wouldn't have much enjoyed the movie if Bale was constantly doubting himself.

Your best self might, most likely, be a version where you need to "act as if" much before the reality starts reflecting that version.

Waiting for the reality to change before you do can seem enticing but it's mostly a place to hide.