Welcome to DV!
I'm not sure if it's as rare as your teacher seemed to think. There are quite a few people on DV who started out as natural lucid dreamers, and began to refine their skills once they discovered what lucid dreaming actually was.
I think it's not uncommon for children to have lucid dreams - lots of people say they were natural lucid dreamers when they were young. I had lucid dreams as a kid myself, but they stopped happening for a while until I learnt about LD induction in my teens.
You will fit in just fine here - there are people of all different backgrounds and abilities.
Hope to see you around the forum!