I had my first surgery at 19. Family lived on the other side of the country so a co-worker took me. I didn't sleep the night before. Do NOT watch the movie "Awake" before a surgery... Just don't. They had trouble finding my vein and had to poke me several times. The worst was waking up though. I had been under for about 5 hours and woke up kind of hallucinating. My eyes couldn't adjust to the light, I was freezing, and couldn't comprehend words or where I was at. I thought I had fallen in the snow during a blizzard and someone was holding me down and someone was screaming. Then nothing. Later I found out that the screaming was from me, I tried to rip out my IV, was throwing up all over, and thrashing around so they had to sedate me. This sort of rough reaction upon waking is called emergence delirium.
I've had 8 surgeries since then and always tell them about my reactions. Certain brands of anesthesia and other meds are able to help with that stuff, and none of my other surgery wake ups have been as bad. I also make a request that if you can't find my vein on the first poke, you find someone else. That helps to eliminate the anxiety pre-surgery caused by someone sticking me four or five times because if the first person can't get it, they seek out the best person they have who gets it on their first try.
Relaxation meds before surgery help- just ask your anesthesiologist or Dr. IV- induced anesthesia also works quicker than inhaled anesthesia, so I have less time to think about and react to what's going on around me. The worst is still waking up for me, but I always request nausea meds to be given before/during surgery, and if possible to have the lights dimmed when they wake me up (sometimes they can accommodate with lights, sometimes they can't). I also request to be covered in heated blankets and to actually have my gown completely back on me if they have to take it off during the surgery. I woke up once only half covered by my gown without my arms in and was not too happy.
Just talk to the Dr, nurses, and anesthesiologist about any concerns or anxiety you have and they can help you with it. Also, before surgery, it helps to have a family member or friend in there with you for as long as possible. Other than when medical personnel are in the room, we don't talk about the procedure. We find some other conversation to have, something to make me laugh and get my mind off of things as much as possible.