Family dynamics change when your child becomes an adult. You can no longer ground them or take their phone away. The new dynamic between you and your adult child is a balance and finding that balance is a challenge.
-What is out of balance between you and your adult child?
-Are you still saying "my way or the highway"?
-Are you letting them rule your house?
-What is the real balance you want to have?
-How are you going to get it?
Finding balance in your family dynamics is a new challenge when you can't see eye to eye. Take a look at what is throwing you off balance and gain some perspective around it. Being open and honest about what you really have control over versus what you want to have control over is just the beginning.