If you can afford the services of a lawyer, he or she can prove crucial in providing information about health care laws in your state and your corresponding rights. Consider going to a lawyer who has experience in these matters -- ideally someone whose expertise is health care law, elder law or estate matters.
A lawyer can ensure that your paperwork is in order and that your documents are valid. Your lawyer may have the power to notarize your documents or can arrange to find one for you; he or she is also a good person to entrust with up-to-date copies of your living will.
Despite the advantages of using a lawyer in writing a living will, their services aren't essential. Many legal and seniors websites offer free advice and sample living wills, which can often provide all the information you need to create your own advance directive.