I only weigh myself when I'm feeling particularly thin or particularly fat to make sure I'm still within my ideal range. Otherwise, I stay off the scale. I had a handful of years where my eating was sort of disordered and I weighed myself all the time. I've come a long way from those days, but weighing myself more often than every so often reminds me of not-so-good times. I'm not saying there's anything wrong with weighing yourself every day; it just doesn't work for me.