 Why have an advanced healthcare directive? That's probably one of the most important, especially emotionally important documents you can execute as part of a living trust center to state plan. The advanced healthcare directive picks people that you choose, people that you trust to know your wishes to make healthcare decisions for you if you can't. For example, requesting an operation and surgery, blood donations, whatever it is that medically can benefit you if you're incapacitated and you can't answer the doctor's questions. Your advanced healthcare directive is an important part to speak for you when you can't.