The following quotes are by Dallas Willard:

Be with Jesus.

Become like Jesus.

Do what Jesus did.

There is a special evangelistic work to be done, of course, and there are special callings to it. But if those in the churches really are enjoying fullness of life, evangelism will be unstoppable and largely automatic. The local assembly, for its part, can then become an academy where people throng from the surrounding community to learn how to live. It will be a school of life (for a disciple is but [an apprentice], a student) where all aspects of that life seen in the New Testament records are practiced and mastered under those who have themselves mastered them through practice. Only by taking this as our immediate goal can we intend to carry out the Great Commission. 

The first and most basic thing we can and must do is to keep God before our minds. This is the fundamental secret of caring for our souls. Our part in thus “practicing the presence of God” is to direct and redirect our minds constantly to Him. In the early time of our “practicing” we may well be challenged by our burdensome habits of dwelling on things less than God. But these are habits—not the law of gravity—and can be broken. A new, grace-filled habit will replace the former ones as we take intentional steps toward keeping God before us. Soon our minds will return to God as the needle of a compass constantly returns to the north. If God is the great longing of our souls, He will become the pole star of our inward beings.

The greatest issue facing the world today, with all its heartbreaking needs, is whether those who, by profession or culture, are identified as ‘Christians’ will become disciples – students, apprentices, practitioners – of Jesus Christ, steadily learning from him how to live the life of the Kingdom of the Heavens into every corner of human existence.

Spiritual Formation in the Christian tradition is a process of increasingly being possessed and permeated by the character traits of Jesus as we walk in the easy yoke of discipleship with Jesus our teacher.