You need to put together a meal plan based on your GRS ULTRA REVIEW specific daily caloric number. It's also important to diversify the food types you consume, as you don't want to eat the same food day in and out. You can find programs online as well that will create diets, specific to your goal, together for you.
Another option, if you're the busy professional type with little time to grocery shop and plan meals in advance, is to find a delivery service that prepares nutritious diet food just for you. They deliver a full day's worth of food, in individual servings, to your door every morning. I tried it for a week and loved the food and convenience of it. There is little time to crave foods or reach for the high calorie snacks in a moment of weakness, because your meals are prepared for you and ready for you to dig into at anytime.It's definitely worth looking into. At first it may feel like a pricier option.
But when you factor in what your time is worth (grocery shopping, writing out meal plans, cooking) and the actual cost you spend on food a month, you'll find the price is pretty reasonable. It might be hard if you're also cooking for your family, but then you have to figure out what means more to you.