Congrats on your lucid dream! I believe it is completely normal to be too excited the first few times, and then once the newness wears of, one can get the excitement under control. I remember my first lucid dream ever when I was about 18 years old, I was so excited I wanted to do a somersault and I woke up, but I never did anything special to reduce the excitement, and at some point it just was not an issue any more after I had had a few more lucids under my belt.