I know it's tough to go to your favorite place and not eat all the things you usually eat. What I try to do is modify it. At my favorite Mexican place I used to have several glasses of regular soda, tortilla chips and salsa and refried bean and queso dip, then for my entree I would have a bean burrito, a cheese enchilada, rice, and steamed broccoli and cauliflower covered in queso cheese. And I would go there at least once a week-now I can't even believe I could ever eat that much. Now when I go I have diet soda, I pass up on the chips and dips, and I have the vegetables and a bean burrito. That's it. And I try to not eat the whole burrito. Once I cut it in half and put it in a box and gave it to my roommate's boyfriend to eat. Another time I ate until I was satisfied and then put a napkin over the rest so I couldn't see it. You just have to modify the way you eat, so that you still enjoy eating, but that you don't overdo it.
And by the way, you are really making me want Japanese food. I'm trying to wait until my roommate gets back in town, because I know she would like to go to. I just keep having visions of little dancing vegetables rolls, seaweed on the outside-that's how I like 'em!