They say the best way to conquer your fear is to face it. So if you’re an arachnaphobe, you should let a big hairy tarantula scurry over your hand. If snakes give you the willies, you should let a small non-poisonous serpent drape itself round your shoulders.
Easy for them to say, whoever “they” are.
What if your fear is this? Imagine you’re really high up – at the edge of a cliff or the parapet of a very tall building. The fear is not being scared of heights. Or about having vertigo. It’s something different.