What used to scare me, honestly, was the lean angle. I was not aware of how far I could go safely with the tires and wasn't sure about my abilities. After my video bike on Level 1, I saw I was leaning a lot farther than I thought! Cobie even pulled me aside one session and told me "you're at scary angles of lean, on the edge of the tire...now quit applying throttle when leaned that far!"
Now what scares me, after doing all 4 levels and getting my confidence and abilities more advanced than previously, is riding on the street. I know what I can do, and what my bike can do, and it scares me to ride on the road. I keep thinking "what if...a car pulls out there, a kid runs out there, a dog crosses the road around that bend...etc" and I'm going too fast. Something that would help would be the braking drill, but only so much I think. Like we've all heard before...the track is safer and more fun; another reason they call it track crack. Now to find that perfect track bike...