It's never too late, you can't let yourself think in such negative thoughts, so brighten up and if you truly want to become something you have to start thinking about what you're interested in, what you're good at and try and find something you'd like to excel in, a job in mind, a future career and such.
I'm so not ready for college, so I'm planning on taking a gap year, teaching english in the middle east, doing a season in the alps and then taking film photography lessons in england. I want to become a photographer and also go into graphic design so I've been looking up summer courses for that.
So you have to set yourself to do something, and perhaps if you don't have the money to go and take courses or do things like that, then ask your dad or people you know if you may gain some job experience with them, or perhaps let yourself be creative and explore a subject you truly love.
Just go for it, don't stop to think, but evolve your ideas as you're moving. Trust me, you can do it :)