My Panic Attack Solution

I’ve recently developed a fear of flying. I used to be fine, but my last two flights I have had serious panic attacks. Ive booked a flight to Greece from Montreal this month. any tips on how to calm down. or anyone who has taken anything (anti-anxiety) etc. can you recommend anything to take?
also are their places to land when you are in the middle of the ocean? because I am fine over land, it is mostly the overwater parts that make me panic.

Try taking a sleeping pill right before you go so you will sleep through the whole flight and be fine when you wake up!