Replying to Loss of momentum.

I was bored of doing this trick on a small jump so decided to bring it up to a jump double the size. It was scary as shit but I stomped it clean maybe 5 times. Then it happened, I fell once. Got pretty knocked up. Was still stoked so I tried it again.. Fell again. Tried it once more fell again 2 more times. Then I even tried it again on a smaller jump. Fell again in the compltely same way. Kinda gave up for the day. Afraid I will never be able to get it again. Does this ever happen to you?