The process of revising myself has not been and is not particularly easy. I am still young because I have lots more to learn, lots more revision work to do before I am, inside and out, the same person. I suspect my experience is not unique. Most of us, I would guess, have had the experience of seeing ourselves from another person's perspective, a glimpse of how someone else sees us and our behavior. If someone wants to learn effective was of re-seeing their written work, any number of handbooks for writers are available in libraries and bookstores.
Some books are better than others.
Similar help is available if someone decides they want to re-see their attitudes or behavior. Some of that help is more effective than other. Whether or not we decide to revise something we have written or ourselves, the ability to see in a new light, to see from a new perspective is the key to effective and successful changes. Repentance is revision. Since we are born into conditions of mortality, repentance comes to mean a turning of the heart and will to God, and a renunciation of sin to which we are naturally inclined.