I wouldn't worry about it. I think it's just a natural excitement, and I went through it, too. Approach it with a "Que sera" attitude.

Doing something relaxing helps. Take a warm shower and read a book before bed. Also, try to only be in your bed for the purpose of sleeping (this conditions you). Focus on getting sleep, and remembering your dreams. Even if you don't feel like you're tired, pretend everything is fine (and soon it will be).

Good luck, and welcome to Dreamviews!