Relieved is a Main Level perk in Kingdom Come: Deliverance, which can be unlocked after confessing to your sins and undertaking a pilgrimage of repentance during the quest The Wicket Gate for the DLC: A Woman's Lot.
Description[]
You've confessed to all your wrongdoing and undertaken a pilgrimage of repentance. Ego te absolve, you are cleansed of sin. Try to keep it that way! Now, when you get a good sleep (at least 4 hours), you will then learn new things faster and get better at the skills you already have.