OK...here's the worst. Actually crippling: a fear of cliffs. It's quite specific. Makes travel by auto difficult. I have to map the route (actually visualize Google maps in satellite version) and make sure there are no sheer cliffs along the way. Hard on anyone in the car with me, because if we should make a mistake and end up on a 'cliff road', I behave very, very, badly.
Fortunately, Long Island is extremely flat :))