I usually try to weigh myself only one day a week, usually on Monday. I find myself not being so stressed out about my weight loss on a daily basis. I keep my food journal with me everywhere I go, and I make reasonable choices regarding snacks. I treat myself about one per month for achieving my weight loss goal. My rewqards are never food based, but for me they are motivators to keep going. They are usually music for my I-pod or new clothing.
Be patient with yourself as we didn't gain the weight overnight, and it won't come off overnight. Keep up the good work!