If we are going to take holiness seriously and see progress in our lives in the sanctifying grace of the Holy Spirit, the place to start is...
Colossians 2:6-7 - So then, just as you received Christ Jesus as Lord, continue to live in him,  rooted and built up in him, strengthened in the faith as you were taught, and overflowing with thankfulness.
No person fails on purpose. Yet, spiritual, and moral failures abound. A few years ago, I taught a lesson to my church’s men’s group which focused on temptations men face. The workbook we were using quoted C.S. Lewis on this subject and was a turning point for many in the group. Lewis wrote,
The World Around You
A few years ago the men in our church’s men’s ministry studied the words of the Apostle Paul to his young son in the faith, Titus. In chapter three of the letter that bears his name, Titus was instructed to encourage the people entrusted to his care to not be like the world around them – foolish, disobedient, deceived and enslaved by all kinds of passions and pleasures, living in malice and envy, being hated and hating (Titus 3:3). He then reminded them of something very important with these words: At one time they too were… just like that.