It's actually very easy to be kind, and fun too! My dictionary's definition of kind is "sympathetic, gentle, benevolent".
My definition of kind is smiling at a stranger, holding a door open for a stranger. It's having compassion. It's knowing you're not the only one in the world with problems, everyone has them.
Simple acts of kindness, leave space when you're at a stop light so someone can get out of the gas station.
We're all in a hurry, busy lives, just slow down just long enough to show some kindness, and compassion.