How do I go on a diet this way?

It sounds like you’re not eating enough at the right times. Not eating all day kills your metabolism. And then when you “binge” at night I would imagine you’re tired and probably not engaging in much physical activity, so most of the calories you consume will not be burned off. You could be taking in less than the recommended amount of calories in a day and still gain weight with those habits. Try to pack some healthy food to eat throughout the day, some fruit, granola, clif bars, whatever you enjoy eating that has some nutritional value. Space it out. If you don’t have time for three squares a day, eat six quick small meals. And don’t eat much at night, you’re body doesn’t need it. Don’t starve yourself at night either though, just eat enough. This will probably be more food than you are used to eating in a day, but just in a more effective manner. My wife has lost 21 lbs. on weight watchers, and she eats more food than she used to, it’s just healthier food and healthier habits. And please don’t buy in to all this garbage about having to look like a twig to be healthy and pretty. Good luck.