I think you've got the right *idea*. You just must tweak it a bit. Embellish it. ADD to it.
Think at least three meals with snacks in between. Or 6 mini meals.
The only way to permanently lose weight is to permanently alter your eating habits. So therefore it is vital to find something that you can do on a permanent basis.
Think lean proteins - egg whites, fish, chicken, turkey breast, soy products, beans.
Think LOTS and LOTS and LOTS of veggies. This will keep you nice and satiated and let you eat a lot of food for your calories (volume). Also think as veggies not just for side dishes - but for snacks as well. Think outside the box. Be creative.
Think some fruits. As they're much higher in calories then veggies.
And whole grains. High fiber cereals and the such.
Fat free and low fat dairy products - like yogurt and cottage cheese.
Stock up your home with strictly healthy foods. ALWAYS know what you will be eating AHEAD of time. Plan that food out! Failing to plan is planning to fail.
You CAN do this. With a sensible, healthy eating plan.