I got my first cold sore and I feel really down. What can I do to have a more positive outlook about this?

I have no idea how I caught it. Anyway, I've had my first one on my lip and it lasted for 2 weeks at least. I didn't dare wear lipstick over top or anything, except for vaseline. I feel ugly with it. I've tried hydrogen peroxide and aloe vera to dry it up, but it lasts forever. I feel as though I'll never be the same again or something.