I know the feeling of dreading the weigh-in, since I've gone on my fair share of binges and weeks where I didn't eat right or work-out. You're not alone there!
I know it is really discouraging to see the numbers creep up after a bad week, but what helps me is to put it all into perspective: this is just
ONE week (or one day). It's a drop in the bucket over the long haul. I know that as long as I continue to eat right and work-out most of the time, then I will continue to lose weight. I also know that most of the weight re-gain I see on the scale is just water weight and it will vanish pretty quickly once I've gotten myself back on track--usually within a week.
I've seen my weight bounce up and down all over the place because of bad choices. Once I re-gained 10 pounds in just under a week and a half! (It came back off the following week.)
So, my weight tracking chart looks like a sort of richter scale, with lots of ups and downs over the last few months. It does maintain a downward trend, even if there are a lot of spikes in there showing when I've had my binges.
Just hang in there! We all have our bad days, or weeks. The important thing is to dust yourself off after a slip-up and just keep going with your journey. You WILL take off whatever you re-gained (usually pretty quickly), and you WILL keep losing weight! Learn from your mistakes, and don't beat yourself up for being human.