The line comes from Star Wars: The Empire Strikes Back, released in 1980, where Yoda speaks it to Luke Skywalker during his Jedi training on Dagobah after Luke doubts he can lift his sunken starfighter. The quote quickly became one of the franchise's most repeated lessons about commitment, and it later spread through memes, reaction videos and soundboards as a shorthand for refusing half-hearted effort. It endures because the wording is short, memorable and easy to drop into almost any challenge, workout or study clip.