No. You do not have to have a durable power or living will and you do not have to tell anyone your wishes. You can still make treatment choices while you are competent. If you are no longer competent, but you have made sure your family and caregivers know what you would want, it will be easier to follow your wishes. If you have not made your wishes known to family and caregivers, a court may have to name a guardian to make decisions for you.
This article is intended to be helpful and informative. But even common legal matters can become complex and stressful. A qualified estate planning lawyer can address your particular legal needs, explain the law, and represent you in court. Take the first step now and contact a local estate planning attorney to discuss your specific legal situation.