I have the same problem. I am new to cycling and I get very nervous going downhill. I'm frantically scanning the ground and convinced I'm going to hit a pebble and go flying towards the ground.

I made myself go up and down one hill over and over again the other day. It seemed to help a LITTLE, as I didn't brake the whole time after a few . . . but I am still a worry-wart about it.

Any tips on how to overcome this fear?