That's all completely normal, i know those of you who know me of course see me as the coolest person probably ever and most likely think i have no fear due to the fact that i can catch bullets with my eyelids and breakdance fight pirates for fun, but it's actually not true. Fear happens to everyone at some point, there is some point where mentally you're just not prepared for what is in front of you, no matter how much you've trained, no matter how many times you've done it. Your mind is what allows you to do the things you do, it gives you the confidence to perform the movements necissary to do the complicated techniques we do. If you think about it, somethign as simple as a side vault can be broken down to millions of tiny individual pieces that all require thought and control, there are also an equal number of way to make a mistake while doing it. Our mind asses these possiblities and makes a decision based on these facts as to whether or not we can do it, fear comes in to play when our mind says to us: "Hey, you may be good...but you're not that good, wait a few weeks before you try that." But what some people forget is that the tiniest thing can throw off a person's idea of possibilities. The easiest example is this, say you're at a jam doing a turn vault, you jump over your foot slips, you bash your shin, fall down, etc. You get up and move on but later on you go to do a turn vault and suddenly you notice your steps are off, the ground is slippery from rain, peopel are watching you, your leg is tight, then you crash into the rail never even attempting the vault. When you become afraid you begin to forus on all the things that say you shouldn't do this. The best advice i can give, being someone who is constantly finding themselves considering whether or not you can do something is to train. Training alows us to try things at our own pace and in our own way and once you become comfortable with the moves you can do them, if you become afraid of a move it's okay because you just keep on training and you'll never stop doing it, you jsut keep honing in your moves, making them better, and avoiding mistakes more and more often, getting comfortable doign them and more confident in your abilities. The more consistent you are the more likely you are to be able to overcome fear and be abel to perform any move you are comfortable with anytime anywhere.