I'm Happy, from the movie Happy Gilmore.
Happy has the potential to be a great golfer but he wants to play hockey (which he's not good at), so he keeps showing up to try out for the hockey team.
I can probably become great at something, but I keep trying to do a few different things, and I'm not getting good at any of them.
I need to pick one thing I have a chance at becoming great at and keep showing up.