problem with looking at people when walking. I have a natural sad look on my face all the time and its messing me up. when walking i tend to have a problem looking at people without blinking or biting my lip first things first what is proper alpha body language walking and sitting down?

Stand tall, walk at a normal pace (not speedy, not slothful), think of funny shit all day so you're not looking so sad I guess. The whole point of sitting is to relax your legs so RELAX. Don't slouch but don't sit ramrod stiff like your at attention. Avoid fiddling with your hands, staring at the ground, "staring into space". You've id'd your problems practice not doing them in the mirror if you have to. Actors do shit like that all the time. They'll make expressions in the mirror at themselves, they'll walk towards their own reflection so they see their own posture. Try it. Get a big mirror and watch yourself as you do these things. Ask your friends what they see when you're out n about.