If the pounds are coming off on the scale, then you
are losing weight and you're
not failing - you're doing great! But it may take a while before you see big changes in the mirror. There are a couple of reasons:
First, a pound off does make less visible difference at the start of our weight loss than it will later. I visualize this by imagining two cans - one of the big 1 kg coffee cans that's about 10" in diameter, and a smaller one that's the same height but about 3" diameter. Now imagine covering each with a pound of butter. It's the same amount of weight on each, 1 pound, but it's going to make a thicker layer on the smaller can, right? Same thing in reverse when we lose weight. It doesn't show as much a first as it will later when we're smaller, but it's still an big achievement to lose each pound.
Second, your brain is slow to recognize change. We're programmed to recognize a few important characteristics of something, and fill in the rest from our mental collection of memorized symbols. This made sense in a lot for our ancestors - no point wasting time examining the exact details of something's appearance if "fur + big" are enough to recognize something that's about to eat you! But it makes us very slow to see changes in the mirror as we lose weight, because we tend to recognize "me" and fill in from our memory what we "know" we look like. Visual artists spend a lot of time learning to bypass this symbol recognition system so they can see and draw what's actually in front of them instead of their memorized symbol for it. Mandalinn82 has posted about this several times - search the archives for "pattern recognition". Photos can make it easier to see the difference than mirrors, especially if you use one of the artists' tricks and turn them upside down. That way you just see the shapes, not "me".
I think in the early stages of weight loss especially, the scale numbers are the easiest way to see progress. I find it helps to keep me motivated if I try to find something unique about each number on the scale - this one moved me down to the next BMI number, that one meant I've lost 5% of my original weight, one more and I will be overweight instead of obese, etc. It helps me to recognize that I am making progress, even though it takes a while to see it in the mirror.
Keep it up! You'll see it in the mirror soon!