I had doubts like everyone. One of the best things that happened to me was my surgery was cancelled 2 days prior due to me getting Covid. The disappointment I felt over that and, especially, the anger I felt every time I was still fat after the surgery date, instead of losing weight, made me certain this was what I wanted to do. No one can tell you what to do, but be honest with yourself, don't just give in to fear. I've seen very few people who regret the surgery and tons and tons who wish they'd done it sooner.