Craig Groeschel writes in “The Christian Atheist”:

It's amazing what a difference the little things will make. For example, years ago when I was a new believer, I always wore a tiny cross pin on my shirts. Because they were an inexpensive way to witness, I'd purchase a dozen or so at a time. Every time someone commented on mine, I'd give it to them as a gift. Once in a 7-11 convenience store, the female clerk complimented my cross pin. Instinctively I offered it to her. For several moments she tried to refuse, finally reluctantly accepting the small gift.

Years went by, and I'd almost forgotten about the 7-11 woman. After church one week, a woman stopped me in the lobby and said she had to thank me. Trembling as she spoke, she explained, "You probably don't remember me, but years ago you gave me this." She reached into her purse and pulled out the small cross pin. "When you offered me this cross, my life couldn't have been any worse. I didn't feel worthy of such a generous gift. But God showed me that he still loved me. My life is different today because of what you did for me."

What I did was almost nothing. But to someone else it meant almost everything.