I have no will power and could use some support.
If you understand the biomechanics of hunger, you will understand it really isn't a matter of willpower, but a matter of proper nutrition. Your body sends out that hunger signal when it is lacking in nutrients and essential fatty acids. You think you are being weak, but your body is malnourished even if you are overweight or just ate.
How can you be hungry when you just ate? If you eat foods high in carboydrates, these rapidly breakdown in to sugar. Sugar spikes your blood glucose level and your body floods your system with insulin in order to return blood sugar to its normal range. Insulin is what causes you to store fat. It figuratively stuffs all the nutrients in to your fat cells. Meanwhile, your brain gauges when to send the hunger signal by what nutrients are floating around the blood stream. Well, insulin "hides" everything from the brain by stuffing it in your fat cells, so you get hungry again even if you just ate. This is what happens when you get hungry one hour after eating Chinese food, which is typically LOADED with carbohydrates.
If you really want to drop 20 lbs without making yourself nuts, cut your carbs to less than 60/day. The ones you do get should come from leafy greens, the natural carbohydrates in full fat dairy, and the little that is present in meats.
Whatever you do DO NOT go on a low fat diet. Fats are made of essential fatty acids. Essential as in YOU HAVE TO HAVE THEM for normal cell function. A low fat diet damages your thyroid, gall bladder, heart and worst of all, your brain.
One of the worst mistakes I see people dieting make is to start eating salads to lose weight and then top it with no-fat dressing. Well, a bunch of those vitamins in that nice green salad are NOT BIOAVAILABLE without fat. So you may be eating something "healthy" but you aren't absorbing it.
Here is a great article on fats
http://www.westonaprice.org/knowyourfats/index.html
Also remember to measure as well as weight. You can lose a bunch of inches and not see the scale budge.