I adore this quote. Brilliant and so very true. So many people have spoken on this topic, far more eloquently than I could, and so I am only going to go there just a little bit (I can't help myself).
People, you don't HAVE to think grand to make a difference. You don't need to be Gandhi. You don't need to be wealthy. You don't even need to have a whole lot of spare time. There are things you can do, right now, to make someone's day brighter.
Several times a year, I make up a monthly challenge calendar for my Thirty-One team, where there are different challenges daily that they are supposed to go do and then post to the group that they've done them. I change these up a ton every time I do it, but I always, ALWAYS have a pay-it-forward Friday on there, where they are challenged to pay for the car behind them in the drive-through for coffee or breakfast or whatever. It's simple, it's typically quite inexpensive, and how much brighter did it make YOUR day if someone has ever done that for you?! Best. Feeling. Ever. To be on the giving or receiving end of it. Simple things like that are exactly the kind of things you can do to make the world a better place, your own little corner of the world, anyway.
So pick something and do it. I dare you.