Oddly enough, heights never bothered me.... I made a nearly 40 year career working up high, on all the major bridges around NYC, and the northeast...
Me in my office around 1984, one of my first jobs after a few year in the sandbox..
I'm terrified of small spaces.. I never knew I was claustrophobic until I got my first MRI...I freaked out when the slid me into the machine...and made them take me out... Open MRI for me..
What job I couldn't do is something where you have to deal with the general public....