You have spent years learning about the flow of the universe around you, you can use that flow to effect the Ki within yourself and within other living beings. You can use your manipulation of the flow to gain the upper hand on your opponents.

Ki Steal (Level 3)

When you choose this path at 3rd level and are under half of your total Ki points (rounded down.) When you  score a critical hit on any creature other than an undead or a construct you can regain a number of ki points equal to one roll of your martial arts die.

Momentum Manipulation (Level 3)

Additionally at 3rd level when a creature misses you with an attack you can use your reaction to shove them up to 10 feet away from you and reduce their movement speed to zero until the end your next turn.

Ki Block (Level 6)

By 6th level you know how to strike your opponents Ki directly temporarily limiting their abilities. When you hit an enemy with an unarmed strike you can expand one Ki point to inflict one of the following effects.

• The target has disadvantage on all attack rolls until the end of your next turn.
• the target has disadvantage on all saving throws until the end of your next turn.
• The target has disadvantage on all ability checks until the start of your next turn.

Pressure Points (Level 11)

Upon reaching 11th level you have learned to attack your enemy’s weak spots with deadly accuracy causing them to lose control over their body for a short period of time. When a creature fails their saving throw against your stunning strike, you can expend an additional 4 Ki points to paralyze them until the start of your next turn. 

Deep breathing (Level 17)

At 17th level you have mastered the art of perfecting the flow of Ki within your body through meditative breathing, making you more resistant to your enemy’s attack and spells. As a bonus action you can enter this meditative breathing which lasts for one minute or until you lose concentration (as if you were concentrating on a spell,) doing so grants you the following benefits 

• All attack rolls made against you are made at disadvantage 
• You have advantage on all saving throws 
• You can add your constitution modifier to your AC