God is always at work in people's lives. They may not realize that He is, but that doesn't mean that He isn't. People attribute the good in there lives to alot of things ie. hard work, good luck, coincidence, karma... But the Word of God says that ALL good comes from Him. Maybe if we would ask people, "What is God doing in your life?" it would cause them to rethink where the good is coming from and they would recognize the hand of God at work all around them.
If we approach others ready to celebrate them and the good in their lives, He will be glorified each and everytime. That is our purpose for being here afterall, isn't it...to glorify Him?!?!?!