It is 100% self-fulfilling. Worrying about height is like a thought-virus, once you encounter it, it infects you, but you can do just fine until you come across

It is 100% self-fulfilling. Worrying about height is like a thought-virus, once you encounter it, it infects you, but you can do just fine until you come across it. Then the challenge is learning to not give a fuck. Such is the pattern of every insecurity since time immemorial.