Paul: I don't know if this will be any help, but believe me that there are lots of us in the same boat. food has been such a constant companion and friend for a lot of us for a long time. But I choose to think about it in a more positive way. It's not that I can't have food any more, but rather it is that I need to rethink what I am using food for. Food was created to be nourishment -- not as a stress reliever, friend, etc. Like most, you probably underwent bypass surgery for health reasons. Just think of it this way, your newfound way of eating will significantly improve your overall health and you will be happy when that happens.
I think it's the initial shock that puts you in a funky mood. I know because I also suffer from depression. I had my surgery on November 23 and as of the last weigh in I have lost 52 pounds and believe me, I could not be happier about that. It already is making a difference in my whole life. I have more energy and my knees feel better. I am off my diabetes and blood pressure medications and have been able to cut my high cholesterol medication in half. These are the things I think about.
I think we all need to learn to feel "full" from other things -- not food.
I'm not sure if I have helped at all, but I sincerely wish you the best and hope that the depressed feeling is replaced by something more positive quickly. I think it will be.