Not pathetic at all. It took me a handful of flights on commercial planes to get comfortable with the idea.
It comes gradually, not all at once.
I'm still a little but nervous but once I settled into my last flight I actually became able to enjoy the view. Although I will admit to spending some of it scoping out possible sites for a forced landing. PPL habits don't die easily.
Give it time and concentrate on the positive. For me it came in steps. One flight I was able to read a book , because I wasn't hanging onto the arm rests with a death grip. The next I was able to doze off and so on.
Concentrate on the improvements!