I think both posters made good points. I think there should be a balance. Sheogorath, I agree with you that everyone seems to always be busy. Always with a need to do things, and fill up time. And there isn't anything wrong with that necessarily. Those people simply are what they are, which brings my next point.

Hard_Wired is right too. To be socially anxious may indeed put you at a disadvantage, though not necessarily for the resulting behavior, but for the mindset behind the resulting behavior or lacktherof. Does that make sense?

Someone who is perfectly at peace with his or herself who acts in a similar fashion as you, may simply just enjoy life enough to be able to fully appreciate it without having to "fill" up all of their time with "things" and actions.

I think that's the point (correct me if I'm wrong) that Hard_Wired may have been trying to make. To make those same actions with a mindset of awkwardness or social anxiety will be percieved by other people.

I must say that there should be balance. Overthinking things can lead to overanalyzing and making a situation or even a "thing" (object, person, etc) much more complex and confusing than it really is. Sometimes you can just allow yourself to take a step back from the reality you know, and just let things be. If in the present moment you feel like speaking, then you will. Make every action with the intent of just letting things be. That's my opinion.