What food/drink keeps you full for the majority of the day?

I used to have the same problem when I snacked mostly on fruits and vegetables.  As previously mentioned, fat and protein do a good job satisfying hunger.  I usually start my day with a glass of skim milk and some plain greek yogurt a little later, right before leaving for work.  As I work through the day I snack on nuts, usually almonds (half a handful no more).  Sometimes I make small meatballs with seasoned turkey for snacking.  Otherwise I keep a stash of protein shakes (EAS) and protein bars.  I can stash a protein bar in my pocket and sneak a small bite here and there.  In that sense, I basically eat my way through the day.  If I want a meal to tide me over for a while, I go for a big breakfast, three eggs, sausage or bacon, toast, and Heinz 57 beans.

Try to eat 6-8 meals a day. Smaller meals than you're used to. This will keep your metabolism running and hopefully remove any feeling of being hungry

If you have scoops of Protein, your body tends to store it and you don't feel hungry thoughout the day..The only problem is when you are constantly sitting down, you eventually start gaining hunger.

They say try to eat small portion of meals a day .

Breakfast - That keeps me good until 3 in the afternoon, keeps at a good rate.