You should never skip breakfast but like pipkin if your daily routine allows maybe have it later. Breakfast gives you a much needed metabolism boost to keep you going til your next meal. If I have it first thing with DS when I'm not actually that hungry I find I am hungry again about 10/10:30. If I just have a cup of tea first thing, I'm still not hungry until 10/10:30 so I may as well just eat my breakfast then as opposed to eating breakfast AND a snack.
When I first cut my portion size I reckon I felt hungry maybe for the first 3 days, but by day 4 my stomach started asking for less food and I was feeling fuller quicker. You have to make sure you listen to your brain telling you are satisfied rather than carrying on eating until you are stuffed.
Slowing down how fast you eat will help your brain tell you are satisfied before getting that stuffed feeling. One way of doing this is putting your fork down after every bite and then having a sip of water. Every time you do this it sends signals to the brain that you are not eating.
Also fill up on fruit and veggies when you are hungry and need a snack. The best way to stop yourself feeling hungry is basically to eat constantly throughout the day. Instead of 3 biggish meals eat 6 small meals a day. What I do is have 3 smaller meals for breakfast, lunch and dinner (I cut my portion size by using a 9 inch plate) and 3 snacks.
Carbohydrates turn to sugar and stimulate your body's insulin, thus causing a vicious cycle of hunger. Food is supposed to satiate your hunger, not increase it! Reduce your carb intake to gain control over your constant hunger.
Protein stays in your body longer than carbohydrates, so choose a lean piece of meat or an egg-based meal over carbs and minimise your hunger.
Bulky, high-fibre foods usually fill your stomach quickly and keep you satisfied for a long time. They also require quite a bit of chewing, which psychologically triggers the feeling of satisfaction.
Excessive amounts of salt is never good for your body and can definitely lead to dehydration. Since many people can't recognise the difference between hunger and thirst, eating salt could make you feel as if you are hungry when you really aren't.
Here's an obvious one but avoid sugar. It burns through your body too quickly. Even sugary snacks that are low in fat are a bad idea, as you will just get hungry soon again and require more food.
If you find yourself eating out of habit or because you are bored try to keep yourself busy.
Avoid alcohol, especially when eating. Not only is alcohol filled with empty calories, it can greatly increase your appetite. It is hard to tell when your body is full after you become a bit tipsy. Alcohol also relaxes that your willpower, which makes you even more likely to go for a second helping.
Although some people use caffeine as an appetite suppressant, you will just quickly crash after the caffeine burns through your body. This is similar to how sugar makes you hungrier than before, so try to avoid it.