Here is a picture of me helping him.
I've been helping him ever since the beginning of the holidays. He improved and got better at reading. He was happy that I helped him and I was too. He asked what to do in return I said, "Pay it Forward." He didn't know what Pay it Forward was so I told him. I said I help him and he has to help someone else and they help someone and so on. He told me that is too big of a job but I said it could be anything simple. I told him you could Pay it Forward when your older but don't forget the idea. He was stunned at first then thought about it, he told me he liked the idea that he would Pay it Forward.
So can one person make a difference? I believe one person can make a difference. If you can find the time to make someone feel happy that is something huge, you just made a difference. When the person asks what to do in return tell them to Pay it Forward. When that happens, it will go on and on and on. So yes, one person CAN make a difference and WILL.