Everyday we communicate with people without knowing what a big effect we might leave them with after a conversation, fight or a general chat.  How you approach people is a big give away on how you are as a person.  I find that with the ever growing need to "fit" in together witht the fact that we all run the same rat race until the end of the week people might not take the neccessary time to greet someone properly.  Just one little positive gesture in a greeting might change that persons outlook for the day or even the way they perceived you as a person.  We are quick to complain but slow to praise when it is due.  There are several messages in the Bible warning us about the tongue, it is not for nothing.  I wish (out of personal experience) people would think before they speak. The pain a harsh word leaves in you heart is much more damaging than any blow to the face can ever leave.  You might build yourself up and think positive but one word can crumble your tower of faith and positiveness to nothing, and sometimes just sometimes we are not strong enough to build it up again. God bless!