In "Word Focus" Glenn McClure writes:

Since life itself is built around relationships (both with others and with the Creator), the success of these relationships is determined by the set of the will: whether it is bent to the physical, twisted to the mental, or surrendered to the spiritual. Paul got right to the point of this matter. In Colossians 2 he showed what a true Christian ought not to follow. In chapter 3 he taught what the Christian ought to pursue. He enjoined various duties in the different relations of life, which should be performed in such a way as to show that true religion has a controlling influence over the heart. These relationships, both with God and with others, involve both action and attitude on the part of man.

Source: Building Christian Relationships: Adult Teacher's Insights, page 10.