There is absolutely nothing worse... than putting on old clothes and realizing they don't fit. It's like a slap in the face.
For me, I find that disappointments are what make me stray from my goals, whereas successes make me want to keep going. Maybe you could make yourself a goal for the next 3 days, stick to it, and spend a lot of time on the forums to keep you on track... I bet you'll feel a little more inspired when you make your goals, and see a bit of a difference, whether it be weight, or just how you feel!
...and hey, I'm not going out at all either. I got to work tonight, and come home to an empty house since all my housemates are out drinking... and I have to open my store tomorrow.
The most exciting part of my night was when I got drunk-dialed by my boyfriend. He'd have to be drunk, I can't even imagine how much a cell-phone call from Ireland to Canada cost...