Violence is not your way. You know that everytime that you hit, something try to hit you harder. Instead, you prefer to show the world the foolishness of violence. As the reed in the wind, you will bow, but not break. Former adventurer, monks in need of a respite or people trying to flee violence learn to use this, gaining a peace of mind and spirit while keeping themselves healthy. Your strength don't matter, but the stronger the enemy, the more incredible you become.

Ebb and Flow

At 3rd level, when picking this subclass, you abandon direct violence. You can't use the attack action anymore. Instead, you can use an action on every melee attack that misses you to deal damage equal to your martial arts damage dice to the creature that attacked you. You still have to roll to see if you make him hit itself. You are proficient in this action.

You can't use a reaction to attack a passing foe in your reach that would provoke an opportunity attack either. Instead, make an attack roll. If you hit, you make no damage but the enemy fall prone.

At 12th level, you can use either your martial arts dice or the creatures own damage dice. If a saving throw is required after the damage, the creature must make it.

Defense of self

At level 11th, you learned to become annoyingly efficient at protecting yourself. Add your proficiency bonus to your Armor Class. You must not wear an armor to gain this feature.

Life of work

Meditation and working around the monastery allowed you a time of reflection and to develop a craft. At 3rd level, you gain proficiency in a toolset of your choice.

Shaming the bullies

Violence is not the way, but to teach it to others, the best way is to prove its uselessness. At 7th level, using an action,  you can taunt the enemy or a group of enemies of your choice to fight you. The group of enemies must be of the same type. They must make a wisdom saving throw of 8+your wisdom modifier+your proficiency bonus.  On a failed save, the enemy or group of enemies will attack you, not caring who might be more of a priority target than you. On a successful save, the enemy(ies) are immune to your taunting for the next 24 hours. 

Karma

You're extensive training and refusal to use violence made you understand how ki flows all around you and in the world. At level 17th, you can use 4 ki point as an action to redirect spell attacks aimed at you at a creature you can see. The attack now aims that creature instead. The effect lasts for 1 minute. As the effect end, you suffer one level of exhaustion.