Here's my deal. It's been a long time since I was actively losing weight so it's much easier for me to have perspective from the other end of the process and I sometimes forget how nice it is to see the scale move in a downward direction. But I do remember going into an emotional tailspin over my first extended stall and it was only like 2-3 weeks. So I have kind of ridden that rollercoaster until I just got to the point where I said to myself, "self, this is freakin' nuts! You are going over the deep end over your scale you idiot!" Not implying you are an idiot either!

But I was. I just had to work through that attachment and work on getting rid of it. I was happier after I did. Do enjoy the downward movement and the journey. But it's rarely a continuous downward line. A few pounds up or down is usually no big deal. If it seems to be a trend, then start examining your menu and seeing what calorie dense items you might be overdoing or where portion creep has crept back in. Look at your exercise and see if there are improvements that can be made there. Maybe there is and maybe there isn't. It's a constant reevaluation for me even 4.5 years into it.
????: South Beach Diet Forums http://www.southbeachdietbulletinboard.com/south-beach-diet-forums-phase-2/2143-diet-ticker.html
And realize that at some point if you are successful, the scale either stops moving or only goes up!

So you can just consider it practice for when you "make it" and are in maintenance mode and miss the good ole' days when your scale actually did move downwards and made you feel good about yourself. Eventually you just have to feel good about yourself from the inside out because the scale will stop validating that for you at some point down the line anyway.