Walking with God

When you became a Christian, you started to walk with God. It is a day-by-day process in which sin has less hold on your life and you more and more look like Jesus. But some days are more difficult than others, especially when difficult things happen. Why do these “bad things” happen? Can I keep back parts of myself from God if doing so helps me avoid pain? Are there any consequences to allowing sin in some parts of my life? What does it mean that Jesus is both “Savior” and “Lord”?