it's about just doing what makes you happy regardless of what other people think. he says "if i fall, if i die, know i lived it to the fullest" meaning that he doesn't care if his lifestyle is reckless or dangerous because he'd rather die happy than live miserable. and he tells people who doubt him that they don't know about dreaming or having nightmares, meaning that they don't understand the hardships he's been through or the hope that he has for a better life. they can't relate to him at all o they're in no position to judge him.
it's about just doing what makes you happy regardless of what other people think. he says "if i fall, if i die, know i lived it to the fullest" meaning that he doesn't care if his lifestyle is reckless or dangerous because he'd rather die happy than live miserable. and he tells people who doubt him that they don't know about dreaming or having nightmares, meaning that they don't understand the hardships he's been through or the hope that he has for a better life. they can't relate to him at all o they're in no position to judge him.