A pat on the back, a responding smile, a kind word. It takes such a little to make another person feel great. And the best about it is that a person who feels great does great.
It's the great thing that we humans do - the ability to inspire each other - that often leads to the greatest discoveries, the best inventions, the nicest music, the most pleasant designs, and the most enduring moments. We are the herd kind of species, the "together-beings", the social animals, the band of explorers. We were born to be great together. But it usually starts with one making a first move. You could be that one. That great one.
"Great people are those who can make others feel that they, too, can become great." - Mark Twain.