In "Doctrinal Discussion" Dr. Gayle Woods discusses what it means to be Christlike, in part saying:

Romans 12:1, 2 speaks of the necessity of a continual condition of surrender to God. In this surrender we volunteer our lives as “living [sacrifices].” We relinquish all selfish ambitions to God, desiring to have our minds renewed and transformed so that we think like Christ. Thinking like Christ brings us to the next aspect of being like Christ. This human responsibility also includes a continual freedom from sin. The Sinless One expects His servants to be “dead indeed unto sin,” according to Romans 6:11. When we offer ourselves upon the altar of personal sacrifice for the glory of God, we no longer bow the knee to sin. Sin ceases to be our master. We follow in the footsteps of our Lord, refusing to look back toward the enticements of rebellion and disobedience. We follow our Lord in obedience, sacrificial love, and patient suffering (John 15:10, 12, 13; 1 Peter 2:19-23).

Discussion: What one thing (habit, attitude, action, etc.) do you need to change in order to be more Christlike?
Source: Biblical Family Values, Adult Teacher's Insights, page 38.