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Stop thinking about losing weight. In other words, give yourself time to think about something else, and to spend your leisure time doing something other than exercise. Everyone needs a break sometimes, and taking time off to forget that you are trying to lose weight will give you time to regroup and rest for a while.
Work out for weight loss by not working out. A lot of people freeze and give up when they realize that for true sustained weight loss you need to start exercising. Trick your brain into going along with your exercise by not calling it that. Stay away from the gym and get your "work out" in by washing your car, riding a bike, going on a hike, or any of a million other activities that are exercise without being "exercise".