Here's what did the trick from me: learn how a plane works. In detail, every piece. What are flaps, what are ailerons, what is lift, etc. etc. Read all the Vanity Fair articles explaining famous crashes. When you understand it all, it demystifies flying, and it's a lot easier to feel comfortable in the air.
I've almost entirely lost my fear of flying since, even in turbulence. I take about 100 flights a year and 150k miles a year.
I could add to that; Watch Air Crash Investigations (also under the name Mayday). It's amazing to learn how everything works and has dual failsafe systems, most crashes result in changes in aviation regulations and/or service bulletins for the airlines.
Then think how many car crashes there are.
Fun fact: on average 2 people die every day in an air crash. Wow... guess how many die in car crashes per day?
Air Crash Investigation is great. It's like a true-crime show for engineering.
What you gather after watching dozens of episodes is that almost all accidents happened many years ago before modern planes and regulations and/or due to an exceedingly rare confluence of events.
I've almost entirely lost my fear of flying since, even in turbulence. I take about 100 flights a year and 150k miles a year.