I think a lot of times people work too hard to have one persona in the professional world, and another one in regular life. This isn't really necessary. If you learn to add a more human touch to your work, then you become more one-of-a-kind.
Do you have a posse? You know, friends that you hang with -- I certainly do. They're faithful friends that share your life and all that you love. Well, the best thing I did at work was to realize that I could benefit from forming a posse at work too.
While unhealthy intimate unions can wreak havoc on the psyche and may inform the way in which we treat others, it's usually an insular thing. Group dysfunction, however, is far-reaching and often much more dangerous.