Maybe because it is easier for you
to believe that you will receive a jetpack than that you will grow wings.
When I try to manifest something, it is certainly easier for me to make myself believe something if it has already happened to someone. Example... Has anyone ever received a jetpack? Yes. Has anyone ever sprouted wings? No. (At least I don't think so
) However, if you could really make yourself believe without a doubt that you were going to grow wings, then I believe you would.
I think everything comes from inside of you.