If you are a teacher, if you are a politician, if you are a businessman, if you are in agriculture, if you are in construction, if you are in technology, if you are in the arts, then you should not be saying, "I need to find my life's purpose in this work," but rather, "I need to bring God's purpose to this work." The missional Christian should see all things through the lens of the gospel, because the gospel's aim is "all things."
(Chandler, Matt, and Jared C. Wilson. The Explicit Gospel. Wheaton, IL: Crossway, 2012. Print.149)