Personally, i wear a smile everywhere i go, i engage and acknowledge the people around me (like holding a door for them or saying hi) and ... i think this is a big one ... i use non -aggressive body language. I push myself out so i do look like I'm closed up into my own thoughts, but i also make myself smaller than others. I don't "man-spread".

So what I'm saying is i act like an eager puppy instead of alpha of the pack.