As much as it's nice to see the scale going steadily down on a daily basis, this isn't an accurate representation of a person's progress. And stepping on a scale on a daily basis can be disheartening, to say the least.
So what is the best way to track your progress, then? Here are a couple simple guidelines:
1. Take "before" pictures.
Find someone you're comfortable with to take them, and don't look at it again until you've made some solid progress (several months down the road). As uncomfortable as it is to take those pictures when you're just starting out, it's an amazing feeling to be able to see how far you've come.
2. Take regular measurements.
Your measurements will change a lot faster than your weight, usually. I typically get my trainer to measure me once per month and write down my weight at that point as well. You can measure yourself as well if that works out better for you.
3. Don't weigh yourself every day!
Weight can fluctuate several pounds over the course of a single day. There are too many variables for this to be an accurate representation of your weight loss. And if it's near to "that time of the month", women will tend to be a few pounds heavier than usual as well.