“Your purpose in life is to find your purpose and give your whole heart and soul to it,” although it circulates widely in social media, is a Fake Buddha Quote. It’s a variant of “Your work is to discover your world and then with all your heart give yourself to it.”
In season one, episode one of Marvel’s Iron Fist, the titular character, Danny Rand, says to a homeless man who boasts he’s stayed true to his purpose of being a hunter-gatherer, “You’re lucky, then. Buddha says your purpose in life is to find your purpose.”
The quote about discovering your world is also nothing the Buddha ever said.
Indeed. If you click on that link you’ll find it’s another Fake Buddha Quote.