To me this is one of the most difficult things in life to accomplish. Someone cuts you off in traffic and almost causes an accident. How do you not launch into a monologue that would make a sailor blush? A person is always negative and unpleasant, why waste any of your positive energy on them?
I find there are several reasons why you might want to do this, but I will focus on two of them for brevity. First is obvious and altruistic reason – they need it. Perhaps their angst is caused by people giving it to them as well and your kindness could turn their world around. Perhaps your kind words could thaw a cold heart? Could turn a frown upside down?
All of these reasons lead us to our second reason. It is one of the greatest opportunities you may have to change the world. If you can turn an unpleasant person into a pleasant person, even if only for a moment that can have a ripple effect. Next time they are inclined to give someone a not so friendly greeting or response maybe they will think of the kind way in which you treated them. Maybe it will even have them feeling a little guilty for not passing it along. That is ok, whatever it takes to remove them from their created work of negativity.
With each and every soul we touch we become closer to a world that will be more loving for each and every one of us. Next time you see this person they may even remember how you treated them last time you saw each other and extend to you a little more kindness thus making your world a little more sunny. So do it for yourself, do it for them and do it for the world. It will not be easy, but it sure will be worth it.
One more thing. Being able to do so will give you a great sense of accomplishment. You will leave with a better feeling about yourself as well as a sense of pride.