For situations where you are incapacitated and therefore not able to speak for yourself, but your health is not so dire that your living will becomes effective, you should have a health care power of attorney or health care proxy. A health care power of attorney is a legal document that gives someone else the authority to make health care decisions for you in the event you are incapacitated. The person you designate to make health care decisions on your behalf is supposed to consider what you would want, so be sure to talk with them about it. It may be a difficult conversation, but you're asking someone to take on a great burden for you - letting him or her know what you want lessens that burden.