Crossword puzzle clue "person who outs himself"

Person who outs himself?

"___ should keep himself to himself": "Treasure Island"

"Man will do many things to get himself loved, he will do all things to get himself ___": Mark Twain

Person still figuring out the ins and outs of getting in and out?

Besides Olivier, he's the only person to direct himself to a Best Actor Oscar

1996 nominee parodied as referring to himself in third-person

Person who may be beside himself?

"The Simpsons" character who often refers to himself in the third person