Maybe read up and learn about what causes turbulence during flight (usually clouds are flying over mountains)? That way, you can kind of be prepared for when it happens?

Bring an sleeping mask with you and earplugs. Both help you get a better sleep while on the plane. I second the socks. Also, bring your own blanket. I bring a cashmere one I got years and years ago, and it is light and warm, and it helps to snuggle up to something soft.

Maybe take a couple of flying lessons? They cost about the same as some therapists per hour and are a lot more fun. I fly all manner of things for my job (rotor blades on top and in front), and I find myself checking things out when I board the plane and sit down, to make sure nothing seems amiss, but it's nice to…