Even if you understand why you are afraid of flying and know that whatever risks actually occur are very small, it's natural to be tense and anxious when you finally get on a plane. You can buy fear of flying book via https://www.fearless-flyer.com/ to overcome flying anxiety.
Before you fly, prepare yourself by learning relaxation techniques such as deep breathing, meditation, and visualization and start using them as far as possible in advance. The more relaxed you are before going up, the more ready you are to fly and remember, it will be easier the next time you take a plane.
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Nothing can make your anxiety about flying worse than having to rush to the airport at the last minute. Even though stress due to being late may have nothing to do with your fear of flying, if you are stressed when you arrive at the airport, you will have a much harder time relaxing when you're on a plane.
Make sure you arrive early for the flight so you have time to sit down, decompress, and use some of your relaxation techniques so you are ready to take off.
If nothing above helps you overcome your fear of flying to the point that you are ready to get on a plane, and then you might want to consider hypnotherapy as an alternative. Hypnosis can help you reach the root of your fear and help you overcome it. Even though hypnosis is not a panacea for your anxiety, hypnosis is a valuable tool that can help you overcome humps and get on the runway and be ready to fly.