He created a character he viewed as his ideal self. Then lived like he was that character.
He was a very shy, skinny, sickly kid who was teased. He dreamed of a character named Zyzz who effortlessly flirted with women, danced like no one was watching and just didn't give a fuck. And the character had a ripped, pussy pulling physique. So he created that, physically and psychologically.
He showed how the physique transformation can represent a personality transformation for some.
That was his contribution.