soar helped me a lot. the whole thing with the "strengthening exercise" is pretty hokey and just totally ignorable IMO, but the 5-4-3-2-1 exercise single-handedly solved my problems with turbulence. i do it whenever the plane shakes and it damn near puts me to sleep every time; and over time i find that i don't need to do it as often, because i've gradually become calm by default in turbulence. which is great!

it's totally a night-and-day difference, i used to be terrified of planes and now they're just a mild irritant.