Does my dream have any meaning?

Okay I almost always have the same dream since i was around 8 or 9. All that it is me falling off a cliff in the desertish area o.O sometimes somebody dressed in black would push me, sometimes I'm just falling in the beginning. Well there is usually 1 cactus next to me on top of the cliff, and I never hit the ground. My hair might hit the ground but right before I die(after falling for what seems hours in hot weather.) I'll wake up all shaky and hot o.O and I feel almost every little that that happens to me. It's creepy >.> so is this just nothing or does it actually have some sorta meaning? Thanks :) oh and it will start out VERY bright then it'll be dark, then the sun comes back up..I was falling for a long time xP