I always had walls around "exercise." It took me back to those humiliating days in grade school when I was the clumsy kid, last chosen.
If you've already lost some weight but hit a plateau, you might have to work a little harder. The heavier you are, the more calories you burn in a workout. That means once you're lighter, you can do the same workout and burn fewer calories. To break a plateau, go a little longer, add something, or switch to a more vigorous exercise. You can do it!
I log my exercise first thing in the morning or early afternoon while at work. The benefit - when I get home, I am more likely to work out because I have already gotten the points and seen how many calories I burn if I do.
When I was using my Bodybugg, I found that I often burned more calories doing things like shopping, cleaning, running errands etc. than I did spending the whole day being sedentary at work and then hitting the gym for an hour.