I love MyShape.com for one HUGE reason: they have awesome tutorials on how to measure your body (it's a bit more geared towards women than men, sorry guys!).
I encourage everyone to learn their measurements. Sometimes it will show progress when a scale isn't!
I uploaded their instructions if you don't want to sign up for a MyShape.com account and there is a box beside each measurement to write your numbers. Don't forget to put a date on the cover and then file it away for the day when your scale isn't moving but you swear up and down that you stuck to your plan.
By the way... my shape was an M the last time I checked. I really want to be an S one day (with more definition at the waist) but I like definition! I'm going through my closet with an editorial eye trying to figure out what works best on my body (okay, I've been watching a lot of How to Look Good Naked).
I'm 39 and have been overweight or obese since I was 8 years old. This is my journey to change not only my body but my relationship with it. And who knows, I might even meet some people on their own journeys along the way. To contact me privately, email me at FatGirlvsWorld@gmail.com