Life is a role-playing game.
Levelling up occurs when you realize that the game you’re playing has become a grind and it’s getting you nowhere which is why you feel stuck.
Thus levelling up requires you to learn how to play a new game at a new level.
But it requires you to creatively get out of your own way to do so, playing a larger role than you’ve become comfortable “doing” so, thus becoming more than you thought possible in the process.