Is it possible to fly?

This question is only for serious answers!! I'm standing on the top of a building right now. Now, this might sound crazy but i've heard some pretty crazy rumors going around that it's possible to fly. The human mind is capable of so much, and with al lot of training and some serious concentration, its possible to control yourself and levitate. If you've had this work for you, please tell me your secret!! I'm about to try it out myself but i'd like some tips!!