I don't know about scared of flying, but I know an awful lot of pilots who are scared of heights. I'm just about capable of getting to the bedroom windows to clean them from the outside, (about seventh rung on a ladder?) and I know some who couldn't even get that far. As long as I wasn't connected to the earth I was fine.
Having said that, in the months leading up to my breakdown I was getting more and more nervous about descending IMC. Despite two-crew, Rad Alt, EGPWS etc, I had this irrational feeling that the ground was going to come up and get me.