I started as a kid, came back as an adult (at 21, I'm 26 now). I have never set Olympics as a goal (except to go watch from the stands
), but I have talked with my coach and have a goal of attaining double jumps and BIG single jumps. I'm a long way off from that, but I think with enough drive anyone can achieve goals they set for themselves.
But you also have to realize that if you don't attain those goals, it's not the end of the world. They're just there to give you something to work towards.
I lost a year of skating last year (save for just getting on the ice and keeping my scratch and some jumps) because I had started my own business and couldn't afford the lessons. Now I'm playing catch up with an awesome coach who can and will push me like I need to be pushed.
Don't discount yourself yet, you're 19. I've seen people start as adults (alejeather is a great example) who with a lot of hard work are now working on doubles.