The only way to overcome your fear factor is to do it.
Upon arriving at the the HD cables the first time, my response was "no way!". I tried it anyway after watching others for a couple of minutes, and was glad I did. Now my fear factor for HD cables has converted into a highly-focused awareness of my surroundings. Whenever I do something like this for the first time, and just push through it, it then becomes easier to do the next time.
"Failure" on one trail does not means not trying another. You try each trail on its own merits, go as far as you can, and perhaps you will end up on the summit. But even if you don't, the experience getting there will be worth it, and your next goal will be to go back and go a little further up the next time. You keep trying until you make it.
I assume your "Class 4" question about Honnold, et al. was tongue-in-cheek. ;)
CaT
