I was having dinner at a friend's house a few nights ago, and I looked down at one of the water glasses as the water in it rippled. I glanced at everyone sitting at the table, and no one seemed to bump the table. I later realized it was the small things that no one noticed that shook the water. Things like putting your elbow on the table or tapping the table's supports with your foot.
In our lives we do some things every once in awhile and realize the effect they have on other people, whether good or bad. We also do things that we do without thinking that can still effect other people. We may compliment someone and not realize how happy it made them, or we may just be messing around with someone and hurt their feelings. Make sure you watch for the small things, the bad ones at least, because the effects can be far worse/better than we intended. This is mainly for the bad things we may do/say to people. Make sure the point is made that you were only joking. I struggle with this all the time. I've found it a lot easier to avoid these unclear comments rather than go through the explanation to whoever it may be. So, watch your words, for the tongue is very dangerous.