overcome my fear of flying

I am terrified of flying (it’s not a fear for me, but an actual phobia). I was getting good for a while (about 5 years ago). I am prescribed a strong sedative to fly. But the phobia has returned since I’ve gone so long without getting on a plane. I keep promising myself to book a short 30-45 min flight, just to take the first step….but I am so scared that since my anxiety has become worse in the past few years I will flip out on the plane. I haven’t flown since before 9-11 so I imagine it will be even worse now….just thinking about this goal gives me a little panic feeling inside.