I used to have a fear of heights (not a vey exotic phobia, I know). It was intense and lasted until I was 27 years old. I was working on a ship once and was told that, like everybody else, I was going to have to take turns climbing up the ladder (about 70 feet) and tar the ropes at the top of the mast. I was told that I have to overcome my fear no matter how uncomfortable it is because I have had my fear too long and cannot keep my fear(just CANNOT, no matter how comfortable I fee l hving it). I was amazed that I climbed that ladder and had the presence of mind to actually put hot tar on the ropes. A boat went by and created a wake ( wave)and the ship was waving (shaking) from side to side while I was at the top of the mast, I was swinging a total of about 40-50 feet AND not freaking out. I found that my fear was only a FACADE, it was not real. It may not be the same for you, have an understanding freind or UNDERSTANDING family member stand by, but only for support when you try to overcome your fear, it might be hard on your nerves. MOST phobias ARE simple and irrational, but some run deep. You have good caring advice on the other posts. All you have to add is your courage.