All you have to do is remember two things:
1. Flying is safer than driving.
2. You enjoy your lifestyle and freedom (and a Soop to enjoy it in) today because 50 odd years ago, young naive kids used to jump into wooden crates every day and just get off the runway fully laden with bombs, then get flakked as soon as they passed the Dutch/French/Belgian coast, then attacked by 109s an, 110s, FW190s all the way to the target, then flakked again over the target and then do the whole thing again on the way home.
So stop being a pussy. Think what they went through EVERy SINGLE DAY!....and they had no choice and did it for poor pay too...
So now, when I am sitting on the end of a runway waiting for take off in a state of the art modern aircraft, I always think of them and imagine what it would be like in a 1940s aircraft. After that I just enjoy the power from the engines and the take off...go baby!.....
The rest of the flight is easy...