An advance directive is a legal document that allows competent people to give instructions on their care in case they are ever incapable of making decision for themselves. An advance directive lays out your preference for treatment. If you feel that at some point you may be subject to involuntary psychiatric treatment, an advance directive may be a good idea. Several websites answer questions surrounding advance directives and give detailed instructions on how to create your own advance directive. The Bazelon Center has comprehensive coverage.