Send Clowns' suggestions of challenging yourself may work for some. However, personally I've found such methods can be counter-productive. You really push yourself, do something scary, get terrified, and confim your fears all over again. It doesn't work for me. I find it's better to make haste slowly, just go a little higher each time, taking deep breaths, and stop when you've had enough. Pat yourself on the back for doing so well, and go a little bit further next time. That way, I can now climb a ladder to my top upstairs windows...if I have to. I still won't go on the roof though! But do whatever works for you.
A slight digression here, if I may. I recently found out that the women's light piston helicopter altitude record hasn't been broken since the 1980s. The person who holds it was delighted when I said without thinking that I'd like to give it a try! Then I thought about it.....around 18,000 ft (I think it's around that at the moment)...in a helicopter...arggggghhhhhhhhh!!!!
