"Just as you used to offer yourselves as slaves to impurity and to ever-increasing wickedness, so now offer yourselves as slaves to righteousness leading to holiness." - Romans 6:19.
In the above text God's Word brings out the power to habits. First it describes how wickedness increases in a persons life. It increase through habits. We all know someone who could be described as a habitual liar. At first they may have told a lie to get themselves out of trouble or to make themselves look good. Now lying has become a habit. Holiness increases the same way. When one holy habit after another is established in our lives holiness is compounded.
As Christians we want to make real progress in becoming more like Christ. Ingraining holy habits is the way progress is made. However one mistake we must watch out for is trying to ingrain big habits. This often leads to failure and frustration. A better way is to ingrain one small habit after another within us. If we tend to say things we later regret we can practice waiting three seconds before we respond when someone says something frustrating to us. If we notice we have an inordinate desire for credit when we do someone good we can make it a goal to help someone completely anonymously once a week. If we have a problem being too critical we can practice saying one thing we appreciate about a person before we let ourselves voice what bothers us. Seemingly small holy habits like these are what lead to a holy life.