I lost motivation once, but met someone who helped me get it back. This isn't about diet but I'd say it can be applied.
What we did was create a list of things that motivated me. We wrote down maybe 25 things that made me want to play soccer. Some examples: To impress a girl, for fun, for God, for my teammates. Next we narrowed the list down to the most important 10 things on the list, and then I wrote down the order in which I was motivated by them. Then we wrote down the order in which I thought I should be motivated. It turned out that while I was pretty forward thinking in what my priorities were before, I lost sight and just gave up. So what you may need to do is look at your priorities and see what's wrong and fix them. Get your mind back into what you need to do.
I don't know if you're a guy (It's funny because your name is Haku :P) but I am, and one thing I've done since I started to get back into my soccer physique is to check out this really nice girl I know. We've been friends for a while and it's been great but I can't ask her out looking like Dr. Phil, lol. Even if girls go for what is inside, I'd like to look attractive for them and for myself, so that's one thing I'm working for. So maybe there is a girl you would like to impress (or a guy if you're a girl) and you can make that a motivator. Or maybe you've got a certain thing you need to go to (like a wedding) and you'd like to wear a small dress / pants for it so you can make that a motivator.
I realize that I am about 18 days late in helping you, but late help is better than no help (unless you really were trying to lose 35 pounds by June 28th or something and now you can't in which case DAMNIT WHY CAN'T THESE THINGS BE MORE OBVIOUS). Good luck in your weight loss!
