Tim Keller's has written a wonderful new book Every Good Endeavor: Connecting Your Work to God’s Work that provides an excellent framework for what it means to be a Christian in our work. This book is a valuable resource for young Christians beginning to chart their life in the work world. But it also can be useful for older followers of Christ moving into the second half of life and asking questions about significance. I love the following quote which summarizes the book:
Everyone wants to be successful rather than forgotten, and everyone wants to make a difference in life. But that is beyond the control of any of us. If this life is all there is, then everything will eventually burn up in the death of the sun and no one will even be around to remember anything that has ever happened. Everyone will be forgotten, nothing we do will make any difference, and all good endeavors, even the best, will come to naught.
Unless there is God. If the God of the Bible exists, and there is a True Reality beneath and behind this one, and this life is not the only life, then every good endeavor, even the simplest ones, pursued in response to God’s calling, can matter forever. (Every Good Endeavor: Connecting Your Work to God’s Work, Tim Keller, p. 29)