Active repentance is examining ourselves, recognizing [and admitting to] our sins, confessing them before the Lord, and beginning a new life. This accords with the description of it under the preceding headings. People in the Protestant Christian world—by which I here mean all [Christians] who have separated from the Roman Catholic Church, and also people who belong to that church but have not practiced active repentance—experience tremendous inner resistance to such repentance, for various reasons. Some do not want to do it. Some are afraid. They are in the habit of not doing it, and this breeds first unwillingness, and then intellectual and rational support for not doing it, and in some cases, grief, dread, and terror of it. . . .
It is well known that habits form a kind of second nature, and therefore what is easy for one person is difficult for another. This applies also to examining ourselves and confessing what we have found.
It is easy for manual laborers, porters, and farm workers to work with their arms from morning till evening, but a delicate person of the nobility cannot do the same work for half an hour without fatigue and sweating. It is easy for a forerunner with a walking stick and comfortable shoes to ply the road for miles, whereas someone used to riding in a carriage has difficulty jogging slowly from one street to the next. All artisans who are devoted to their craft pursue it easily and willingly, and when they are away from it they long to get back to it; but it is almost impossible to force a lazy person with the same skills to practice that craft. The same goes for everyone who has some occupation or pursuit.
What is easier for someone who is pursuing religious devotion than praying to God? And what is more difficult for someone who is enslaved to ungodliness?
All priests are afraid the first time they preach before royalty. But after they get used to it, they go on boldly.
What is easier for angelic people than lifting their eyes up to heaven? What is easier for devilish people than casting their eyes down to hell? (If they are hypocrites, however, they can look toward heaven in a similar way, but with aversion of heart.)
We are all saturated with the goal we have in mind and the habits that result from it.
from Regeneration, Pages 41-42