Step 1: Be very intelligent in an idiot savant sort of way, becoming attracted to a philosophy or worldview that appeals to youthful idealism. Read Ayn Rand and become an Objectivist.
Step 2: Move slowly away from the orthodoxy of your belief system and one day announce that you are really a market anarchist but that Ayn Rand was still pretty great.
Step 3: Declare one day that "capitalism" wasn't what you thought it was.
Step 4: Discover that there is something called "mutualism".
Step 5: Make sure you are working for a low wage in a menial job (preferably at a supermarket) and realize that in spite of all your talent you'll always be poor under the rotten, exploitative capitalist system.
Congratulations! You're now a commie!