I can sort of relate, I'm not terribly fond of high places either. The way I was able to get over it enough to deal with them is the heights were keeping me away from the REALLY scary ground. I know it sounds flippant, but I'm serious. I still don't like heights, but I've concluded I'm more afraid of that short, sudden stop after several seconds of 9.8m/s^2 worth of distance going past me. Lesser of two evils.

Just so long as it isn't ladders.