Meaning of "If it's meant to be, it will be; if not, it won't"

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If it's meant to be, it will be; if not, it won't될놈될 안될안#마인드셋#밈/유행어2010s Meme

A self-deprecating remark that accepts the idea that life’s outcomes are predetermined by a fatalistic attitude—that those who are meant to succeed will, and those who aren’t won’t

"This project turned out to be a case of the ones who were meant to succeed did, and the ones who weren't just withered away. Those who were destined to succeed did, while those who weren't just withered away until the very end."