"Believe in yourself" is standard motivational speech 1:1.
Not sure why you're seeing some immensely deep meaning in this.
That's the fun part.It has nothing to do with Disney as I've also been siting the EU which was made before Disney had any thing to do with starwars.
But if you want to try and justify your fanfic/head canon go ahead ill stick with the actual universe.
I *am* sticking to the actual universe: the first 6 movies.
You're not.