When it comes to air travel, & anxiety the best thing for you is to check your control at the door. If you think about it, you give up control in every other aspect in your life. So should give up some control when you travel. Doing so will make you a better passenger. Just like the old saying, " you can't have more then one chief, or cook". Leave it up to the professionals to get you there safely. Besides, you leave it up to the professionals when you go to the doctor, take a bus, or to manage your retirement. By leaving it up to the professionals, & being a better passenger, you could focus more on important stuff like control breathing, or positive thoughts.