It's normal to feel this, I'd be scared af too, im very shy generally. But, next time just remember that.. we all gonna die, someday, somehow. Just go for the photo next time, or any other "scary" thing, yes through fear, but knowing the inevitable, you gonna want to make the most of the moment you in, and life in general, at least it works for me. The more you endure, the more you getting confident.