I am struggling with EXACTLY the same thing. What is it about <170lbs???
I seem to have some sort of mental block about getting smaller than 170. I don't know why, I WANT to weigh less. I keep gaining and losing the same 5lbs over and over again.
I get down to 170lbs through calorie counting (I'm awful and don't exercise at all), then give up and binge. Or, maybe not binge, but intentionally indulge by eating absolute crap for a while (and obviously not tracking calories). I would probably weigh 160 or 155 by now if I didn't insist on gaining and losing the same 5lbs repeatedly. 170 (173 today...) isn't a good weight for me.
I know it has to be a mental thing, I just don't know why...
I know that we can do it, and more importantly...that we WILL do it.