Earlier quoted context omitted.
There is an important parallel between the fear of flying and the fear of striking out on your own. There are so many things that are beyond your control, and taking-off (in either context) is the riskiest part. I never cease to be amazed at the first moment when an airplane feels like a kite in the wind right after takeoff.
No, there is no parallel at all, at least in my experience. Fear of striking out on your own is something that everyone should have a little of - it's healthy. But my fear of flying/heights is completely irrational and very strong.
Rather, what makes me uncomfortable, is that sometimes very important parts of the plane blow up and the engineers can't figure out why. But hey, at least there are two or four engines and three or more power supplies.