I'm 12 days out from my surgery, still in full liquid phase, and understand what you are going through. I've definitely had moments of despair and regret, but we'll get through it.
I had my surgery done through Kaiser, had to take a three month class, then follow it up with 2 months dealing with the doctor. One of the things I've found most helpful, even with all the information I was given, was going to a bariatric support group. Kaiser has one free to the public, and hopefully someone has something similar in your area. It's been a great source of information, advice, and encouragement. You get to talk to a lot of people who have been in your situation, and can offer different advice on getting through certain things.
Don't give up yet. 3 days out I really was wondering what on earth I had gotten myself into. I'm 2 days away from my next phase and know that will make it so much easier. Stick with it, you didn't go through all this for nothing.