Crossword puzzle clue "what one does for his own interest"

What one does for his own interest?

Cartoon boy who gets his own fictional TV show, "Spaceboy Zoom and His Dog, Astro"

Adam's "son in his own likeness, after his image"

His "The Hills" knocked his own "Can't Feel My Face" off the #1 spot on Billboard: 2 wds.

Have an interest in interest

Borrower's interest re interest

Paddle your own ___ (do your own thing)

ATM charges, because of course you have to pay some of your own money to access some of your own money