This is my favorite subject to discuss with the hunting group. I've conquered cold feet completely. Here we go!
You need good insulated boots, but you don't need 4 inches of closed-cell spray foam boots. I use Sorel Pac boots, and wear plain white cotton socks. Ears, fingers, toes, noses all get cold as a result of the body prioritizing energy away from extremities and concentrating it around the core where your vital organs are located. It's not cold getting in, it's your body taking heat out.
To keep your extremities warm, you have to keep your head and core warm. I utilize a lot of layering over my chest and stomach. T-shirt, long sleeve T-shirt, hooded sweatshirt, Cabelas Wooltimate vest, carhart bibs, heavy orange coat.
You will generate a lot of heat while you're walking, so open up as much as you can and go slow. You want to get warm on the way out, but you don't want to break out into total sweat-down. Get in your stand and zip it all shut again. By doing this, I can wear mechanix gloves vs heavy insulated gloves that make trigger manuvering tough. I'm not very thick, and have been able to withstand some pretty tough conditions when others bailed hours earlier because they were freezing up. The wind would go right through their coat and bibs and they'd still freeze up their toes and fingers with all their fancy gloves and BOB boots.
Its just a matter of science. The body will push surplus heat to the extremities when it has it. Give it a shot. It'll change your outdoor experience forever. I've also utilized this to enable me to ice fish outside in the wind all day long. No cold feet, no cold nothing. I can fish outside down to temps where the equipment fails before my warmth tactic fails.