Let me tell you a secret about experiencing the miraculous in life: Declare a goal, something big, something that scares the shit out of you, and then commit to deliver on it, even if you have no idea how you're going to do it.
Jump on it. Start something. AND FINISH IT. If one of the three smallest kids in my class throughout grade school WITH A CHRONIC CONDITION THAT DIRECTLY AFFECTS BODY WEIGHT can do it, so can you. Cheers.