This is an interesting insight about work that has been useful for me so far, "Never let your guard down. Remember people at work are not friends (usually), and to share your whole life story could prove disastrous. Anything you say can and will be used against you. Be professional." I might add that one must never wear one's heart in one's sleeves.

I never quite understand an oldie tell me that he does not like to have his close friends and darn it even his girlfriend in the same company. Now I know. It is a battleground my dear, and don't let that shell crack baby. It's your protection against pain.