I went to nutritionist and she told me to count calories. I did that for a couple of months, but it was too difficult to stick to it for much longer.
My only tip is to think of low calorie foods to taste good. Salads would be a good example, but dressing isn't the way to go since dressing adds calories. Instead of dressing, you might use garlic and onions, since they give taste without giving that much calories. You can also use avocado; avocado has calories, but those are healthy calories.
I know this advice is not for everyone since others might not like salads the way I do, but thats the only thing that seems to work for me.