I think the fear of flying is quite common so it's nothing to be embarrassed about. Statistically speaking flying is the safest, fastest, and efficient (given a certain distance) mode of transportation. A simple understanding of how lift is generated should keep your mind at ease, just remember that in the unlikely event of dual engine failure the guys in the front have been trained to glide the plane to safety. I would be more afraid to get into a helicopter than a plane.