almost hit someone with my car

So today I was entering my drive way and while I was doing this I almost hit a child who seemed like he was putting an advertisement on my front door. I feel absolutely terrible. He shouldn't have ran across my drive way while I was driving in, but I also should have been aware. I was not paying enough attention I figured I was just driving into my drive way. I feel terrible he looked slightly frightened, it such a haunting thought to me that I almost hit him. I think I know where he lives, should I talk to him and apologize, I just feel terrible and I don't know if I should do something about it. This will definitely be a lesson to me to always be aware.