First, try to make eating easy....and adventurous. Try a different fruit AND vegetable every week. There a lot of new choices in our vegetable sections these days. Sometimes, I like to concentrate on new mushrooms, which by the way can be grilled or sauteed with spray-vegetable oils and added to salads, or beans etc.
Then, speaking of beans. Try to incorporate that into your diet. If the side-effects are too much, buy Beano. But beans are a great source of protein and fiber and make you feel full a lot longer.
Diets are bunk! Eating is how we live so try to make it healthful but exciting. More garlic and hot peppers and less lettuce and cucumbers.
Also, soups are great. There is some scientific backup to the fact that our stomachs register satiety via fullness or weight. So, soups with lots of vegetables (add more via frozen veggies) are a great way to feel full and satiated without a lot of extra calories.
After all, we can scarf down a Big Mac in a few minutes, but some really hot soup or hot beans over some brown rice (with cumin, garlic and maybe a few extra veggies) not only take longer to eat, but have more volume, nutritional vaule, flavor and nutrition.
Vertically challenged, but expanding my horizons.