Movie involving Mom telling som they're not special

Okay very sorry about how vague this is:
There was some movie where at the beginning of the movie, the protagonist is sitting in bed as a kid and the mom is telling him off screen that “, you’re special, unique, one of a kind and you’re going to do great things when you grow up." Or something like that. Then later in the movie, near the climax or so, the protagonist thinks back to the memory of his mom telling him that, but says ", you’re not special. You’re average like everyone else, etc” and it was a funny break away from the original scene going on at hand, but I think the protagonist uses this to fuel him to continue on what he was doing before he thought back. Any help would be mega appreciated!