Flying alone... Super nervous? Advise on how to stay calm& ease nerves? Thanks!?

Soo.. I am going on a plane by myself in a week. I have flown before, but I was little. I know it's safer to fly than drive, but for some reason I am letting he nerves get the best of me. The part I am most scared of is the take off/landing... Anyone understand where I am coming from? Any suggestions on how to calm my nerves? What to do on the plane to entertain/distract myself.