You are what your thoughts direct you to become. If you believe that a dream catcher works, then your mind will engineer all dreams, actions, events and happenings, as attributed to the effect of having a dream catcher. If you don’t believe in using a dream catcher, then you’ll scoff at the idea that a dream catcher can actually catch bad dreams and nightmares, and only allow good dreams to reach you. It is all in the power of your thoughts.