This sort of thing is always a bit scary, though from what alot of people often say, it ends up being not too bad.
I havent had surgery on that level before myself. What I had done was oral/dental/something surgery, which is a much smaller thing. To pull this really stupid-looking tooth down that had never come down by itself, because why not. "It'll look so much better" they said. No, it looks bloody stupid, it's very malformed.
But anyway, I was freaking terrified beforehand. It was even worse when I heard that they were going to give me 4 shots.... in my mouth. I've a fear of needles.
In reality though, what it mostly was.... is bloody boring. It was like 3 hours of staring up the docctor's nose as he did who knows what. I kept nearly falling asleep, not because of anything they gave me (it wasnt that kind of anesthetic), but because I was absolutely bored out of my mind, but they'd jab me with a finger each time and say "No, you cant do that". 3 hours. Very dull. Reminds me of getting an MRI, those are a little scary but also super boring, except it took absolutely forever. Overall, I felt *nothing* through the whole thing. Nothing at all. Not even the needles (they used some topical mystery goo before giving the shots).
The worst part was that for the next 3 days I could eat nothing but soup. I tell you, I dont have soup very often anymore.
0/10, very dull, do not recommend.
Point is, with this sort of thing, alot of the fear is just in your head. In reality, it's likely to be quite a bit easier than you think.