The speech comes from a 2015 green-screen performance by actor Shia LaBeouf, filmed as part of an art project that invited the public to remix his motivational monologues. The full 'Just Do It' routine quickly spread online, with 'Don't let your dreams be dreams' becoming one of its most quoted lines and a staple of parody edits, reaction videos and motivational compilations. Its earnest delivery and easily cut green-screen footage kept it circulating long after the original project ended, especially on short-form video platforms.