reformed
v.v. changed for the better by stopping bad habits or old ways of behaving. You use this to describe someone who has decided to live a more honest or healthy life.
v. having abandoned previous immoral, criminal, or self-destructive behavior in favor of a more socially acceptable lifestyle. Often used to describe individuals who have successfully completed a process of rehabilitation.
He is a reformed smoker who now runs marathons.
The program helps reformed criminals find steady work and reintegrate into the local community.
The politician's platform focused heavily on his identity as a reformed radical, arguing that his past mistakes gave him unique insight into the needs of the disenfranchised.
Typically used as a predicative or attributive adjective to describe a person's character or status after a significant change.