Funny you say this because I've only recently started to notice how blissfully unaware we are most of the time. I used to think that I'm aware of my surroundings, but I'm not. I go into these mental loops and holes at home or at work. Sometimes I talk to my co-workers, but they don't hear, they are glued to their computer screens stuck in their own personal loops in some wierd time space breaching portal. The mind focuses on something and blocks out everything else, that everything else no longer exists, it's no longer part of our reality. 
Since this realization, I'm trying to be more aware of my surroundings and of my actions as persistently as possible. I found that it makes a huge difference in my interactions with others. I feel a much greater presence when I'm aware. Whereas before I felt more as an outsider looking in.