Great, great, short primer on why the Gospel affects everything
Generally, Christians tend to see the grace of God as a grace that forgives your sin when you blow it, which is true. But the grace of God also empowers your life so that you live differently, passionately, and purposefully.
The Christian life is more than just trying your best and praying for forgiveness when you blow it. It’s about a transformed life as a result of Jesus’ work on the cross and his subsequent resurrection being applied to your life by the power of the Holy Spirit.