Have you ever tried chia seeds? They are really high in protein and fiber. You can eat them as a whole seed, you don't have to grind them like flax. You can either mix some in a bottle of water, or any other kind of beverage, shake it and let it sit for 5 minutes or so, shake it up good again and it will make a kind of gel drink. I know it sounds kinda weird, but it is actually very tasty and filling. If you don't like the drink, you can sprinkle them in a yogurt and you will never even know they are in there. I get mine from Opal Nutrition | Red Opal Nutritional Products | Chia Seeds They are high in Omega-3s too. They work good for me around my usual 2:30 - 3:00 afternoon slump. Enjoy!