Rationalizing and desensitizing has always helped me.

I used to get spooked by turbulence. To deal with it I took flying lessons. If you think the turbulence in a jet is nerve-wracking, try it in a small Cessna or Piper!!! Those planes get tossed around like a rodent in a washing machine Perplexed Knowing those little planes can handle that much turbulence made it easier to handle the small bumps you'll experience on a jumbo-jet. I'm not suggesting you have to do what I did, but I used to fly a bunch and given the amount of time I spent in the air it was worth it. Just know that the amount of stress those planes can handle is immensely helpful.

Your biggest problem will be jet lag. So I recommend trying to set your circadium clock while on the plane (or before you leave) to adjust slightly for the 8 hour difference. Regrettably you'll be chasing the sun the entire trip so it will seem like a really long day unless you take a red-eye. Just try your best. I've done numerous long trips without good preparation and spent the next day (or two) useless in customer meetings the next day. A tough spot to be in when you're the center of attention.

Best of luck and enjoy your trip to LA.