The scale can be a very motivating tool, however for me I ditched it over 5 years ago when I was becoming too obsessed with the number. For me getting rid of the scale is what allowed me to finally give up the diet mentality. And the reality is, I no longer have the frustrations of the daily mood swings that weighing in would bring me every morning. I am what I am regardless of what one little number tells me.
Does ditching the scale work for everyone? No, but I do believe it can keep many people stressed out if the number is not what they expect to see especially when they are following their program to a T.