Hey, I've been lucid dreaming since I can remeber and I'm fine, I realise I'm dreamong in 90 to 100% of the dreams I have in a night, there really is no worries about it, I don't find myself getting tired from lucid dreaming or anything, thing that does happen to me when I have long non-lucid dreams, and making all non-lucids more magical can actually make for very interesting/fun dreams, in my opinion.