I have the same trouble my friend, ive been riding trials for 12 years now, and at every level of competition, or just general riding i still get the " fear".
Whether xxx move will work, what happens if my brake doesnt hold on this gap etc
Like you i have real trouble with sidehops, i absolutly hate doing them, well doing sidehops where i have to really go for it, something in my brain just refuses to let me do them.
But riding elite at this weekends euro championships really helped me get one step closer to conquering the fear, because all the big horrible moves in the sections i had to do them, there was no way around them. I attempted everything, this has proved to me i can do it, its well within my ability, and that i should just go for it all from now on.
One day something will happen, and all of a sudden you'll just start getting more and more confident with the moves you dont like, and then eventually there'll become second nature
Scott