A few months ago, my social media team recommended we shorten Tiffany's Epiphanies so you, our fabulous viewers, would watch to the end. And you know what, it worked. But it meant we had to drop the book recommendations from the end of the video. I didn't realize that this decision would have such an impact on some of you. And it hit me: We don't always realize the difference we are making in others' lives. Try this exercise to see for yourself.