A fear of heights can easily be rectified quite quickly with a visit to a hypnotist Anton. Prices are very high though.

Interestingly enough humans only develop two natural fears. Heights is not one of them. A fear for other preditors and loud bangs are the natural ones. Every other fear is just developed during your life. For example a fear of Spiders could have developed from maybe seeing your mother scared of them when you were only very young yourself. But because these fears are learned during life, they can be unlearned.