You should probably hire an attorney because the question shows a mistake. A living will says that you don't want extraordinary procedures to keep you alive. I don't know whether you are talking about a will or a durable power of attorney. Because the fact that you need a document that will only be effective when you are either dead or mentally incapacitated, you should probably hire an attorney so you can be assured that it is done right.
You may email me for an appointment.