Any other VERY HUNGRY veg*ns out there have trouble feeling full?

I just got this http://www.paperchase.co.uk/p/472804/lunch-box-enchantment-design.html box from Borders, and while it is quite large (almost 4 cups!) and I am one who definitely needs to use bento to control my diet, I actually am pleased with the size. I am a vegan-leaning vegetarian, for 2+ years now so it's not like I drastically changed my diet recently, and lately I simply can not reach a point of satiety. I pack a healthy amount (1 cup of brown rice, about 1/2 cup of beans or occasionally tofu, and some veggies and fruit) into a 2.5ish box I have, but this just isn't cutting it. I find myself still starving which leads to mad snacking, which is causing me to get even fatter. So I was thrilled with the size of this box, but today I filled it with 1 cup of brown rice, 1/4 cup vegetarian baked beans, 1/4 cup shelled edamame, a little more than 1/2 cup carrot kinpira (my latest addiction!), about 1/2 cup of cauliflower I didn't finish because I just couldn't stand it, and a kiwi for dessert. I ate a bit late due to a family emergency throwing the whole day off, and I'm still famished. What can I do?!? Should I increase to 1.5 cups of brown rice? I think that and a full cup of beans would probably bring me closer to feeling satisfied, but I need to lose 60 lbs ASAP, which won't happen without a bit of calorie control. I need help!!!

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