Pronoun repeated in "___ do ___"

YOU

Think of the word that completes both blanks when asking someone to take action.

This clue plays on the phrase "you do you," a modern slang expression meaning "be yourself" or "do what makes you happy." The blank spaces in "___ do ___" hint at a repeated word, and the only pronoun that fits both spots is "you." The answer is straightforward once you recognize the common phrase and its structure.