Eat out rarely, and if you do, eat smart.
Try to reduce your stress if you can and get a full nights sleep every night if possible.
At home, use a very small plate (it tricks your mind as it can look full with less): don't pile it sky high: don't take seconds. A Corelle set has 3 sizes of plate...huge, medium, small, and then there used to be saucers with the little indent in the middle for the cup. I use the small. It is about 7" across.
Eat a hearty breakfast comprised of proteins & complex carbs, with color and a variety of tasty real food...or oatmeal (proteins & carbs in one). Skip empty processed cereals and empty store made white or brown bread. I call this "glue".
Don't skip dessert, but only take a small amount. Keep it in check by allowing something special once or twice a week. Skipping it all together can set you up for failure.
A good easy rule of thumb is 1/3 meat (protein and animal fats keep you full longer and give your mind & body what they need), 1/3 vegetable, 1/3 complex carb.
Eat real food, not industrially processed. Read ingredient labels, not nutrition labels. You should know what you are eating. Avoid highly sugared foods (corn syrup/high fructose/other sugar names) as your body has trouble digesting these properly.
Reading these lists will also help cut excessive salt intake. It should be listed close to last, as should any sugars.
Ingredients are listed from most to least. Less ingredients on the list generally equals the better, less processed food. More ingredients that you don't recognize means they are trying to make up for something lost in processing (=empty food). For example...most cheese no longer is made with real dairy (modified milk ingredients has NO dairy and is usually 1st/2nd on the list). You can find real cheese @ Superstore. PC unpasturized cheese is made with real ingredients. We have found that PC is almost always the better choice ingredient wise, but you can figure that out for yourself as you start to observe these things.
Eating food with substance (nutrient dense) will help you be satisfied with less food as your body will not keep searching for the nutrients that you can't get from empty "foods". This causes a lot of overeating problems as your mind & body then crave good things that are missing, causing you to eat too much of empty foods in search of that illusive need. Eat dense, be satisfied.
If you do snack, choose good fats & protein foods as they help keep you full longer.
Throw out/donate foods in your cupboard that will disrupt your goal. Having temptations and/fake foods handy for in a pinch doesn't help.
When you put your fork down while eating, this is generally a sign that you are done eating. Quit eating.
If you think that you are still hungry, drink something healthy (water is good) to give you that full feeling.
Avoid energy drinks/gatorade and such after/during exercise as they are more hype than anything. Water is best.
I did these things and it helped me rediscover what the true feeling of "stop, you are full" really is and helped me see my weight drop.
It will take some time to re-adjust, as your mind needs to be reprogrammed and reconditioned, but it will happen.
So...
Sleep well.
Eat on a small plate.
Use the 1/3 rule.
Eat a real & colorful breakfast.
Read ingredient lists.
Eat real food.
Eat nutrient dense, including animal fats.
Fork down=stop!
Good luck!