Hi, Lottie ~
Your pre-op anxiety is perfectly normal. I think every AN surgical patient goes through this to one degree or another. I know I did but, as Jeremy stated in his post, you have to (a) realize you simply are no longer really in control of this and, (b) have faith in your doctors and their surgical team. This was how I approached my AN surgery. I prayed a lot and simply 'went along for the ride' as The Big Day approached. By the time I was being wheeled into surgery, I was as relaxed as anyone could be in that situation. A tiny bit apprehensive but not scared or panicky and happy to finally be 'getting on with it'. Long story short: like many AN surgery patients, I did just fine. No real post-op complications, a short (5 day) hospital stay and a relatively rapid and drama-free recovery. I was driving again within 2 weeks of my hospital discharge and within just a few months, doing everything I did before my surgery. O.K., I get fatigued faster than I used to but then, I'm ancient. Other than that, 'life is good'.
I trust that as you 'make peace' with the surgery and really put your trust in your surgical team, you'll be more sanguine about the operation and with a positive attitude, I think you'll do just fine.
Jim