Christianity is actually an interesting mix of grace and work. Step outside of any preconceived ideas and take a look at the New Testament with fresh eyes. When you do, it becomes obvious we cannot save ourselves and we are saved only by and through the grace of God.
On the other hand, Jesus and the disciples worked like crazy. Yes, they attended the occasional dinner party and fished from time to time, but they also worked hard. They were constantly traveling from place to place teaching, healing and serving others. The Apostle Paul even continued to run his tent making business while he preached. Even the early Christians were so busy working deacons were created to help handle some of the work load that had fallen on the elders.
The problem in life is that most people ride the pendulum. If they believed work was required too much when growing up, then they preach only grace – Christians can sit back and have fun – no work expected. If you grew up in an environment with too much grace, then your pendulum probably swung the other way. The truth lies in the balance. We are saved by God’s grace, but God wants and expects us to work in a variety of ways and for a variety of reasons – for our own good and the good of the Kingdom.