What is the best way to get over a fear of heights?

It is not clic vertigo. It may qualify as "psychogenic vertigo," meaning that your mind is creating the sensation of dizziness. You should try to desensitize yourself. Get a ladder, and practice climbing up a few steps and then just staying there, surveying your surroundings. At first, dont climb to a height above where you can safely jump down from. Your mind will habituate to being up there, and your reaction to heights will lessen.