So, I've worked at this place for about 2 years now, and being the social retard I am, I haven't made any good friends outside the people who sit next to me everyday.

I'm not the kind of person that says 'Hi' and smiles to strangers he sees in the hallway but I'd like to start doing it in order to become more social. Here's my question:

  1. Is it really possible to change my 'aloof' image after so much time being like this? What's I mean is that if I sudden start greeting all those people I previously ignored, won't that seem fake and leave me in a bad position? Should I just not do this?

And here is a bonus question that came to me while writing this post:

  1. On the matter of greeting people you see everyday (likes colleagues at work, classmates), what about those that never do the same for you? Say, those people that if you never greeted then they'd just walk by? Should you ignore them too and never acknowledge them or should you keep bringing friendly regardless?

Thanks guys.