If you want to make a difference in the world in which you are living, learn to compliment the people around you.
Praise is to the human spirit what sunlight, water, and good soil are to a seed. People need others to notice the good things they are doing and commend them for it.
One of the commodities in life most people can't get enough of is compliments.
The ego is never so secure, so intact, one cannot find room to plug in a little praise. The problem is compliments, by their very nature, are highly biodegradable. They tend to dissolve hours or days after we receive them - which is why we can always use another one.
So if you truly want to help people, catch them doing something right and affirm them. Go ahead and go overboard. You won't spoil them; you'll help them reach their highest potential.