Best way to lose weight without exercise?

I am currently enrolled in a gym but due to my hectic schedule, I was forced to freeze my membership. Losing weight without exercise is my biggest dilemma nowadays. Good thing, I am friends with my personal trainer and she advised me that discipline is the key to do this. You must set a goal and focus on complying with the dos and donts in achieving your setting. Follow a meal plan. Eat 5 times a day but in moderation. As much as possible, stay away from white food (white rice, white bread, dairy products). Replace your cravings with brown rice, wheat bread, soya milk, and the like. Lastly, water therapy. Trust me, it really works. :)