Ever been in a room full of people......

yet still feel completely alone???? I have to admit I have that feeling alot. Like my presence doesn't really matter one way or the other. Like I am there but no one really notices. I'm there but not really part of the group or discussion. Like if I wasn't there the party would still happen, people would still do their banking, people would still do their thing. I guess I feel like I don't leave an impact or impression on peoples lives. I am not sure why I feel this way. I have been feeling like lately I have been going through the motions but not really being in the moment...I need to be in the moment just need to be so overtaken by emotions that I don't care about anything, anyone or anywhere else.