It is important to make sure that you take the time to reviewing your advance decision. this is because you should make sure that your advance decision continues to reflect your views. Your particular circumstances and state of health may influence how frequently you do this. Regularly reviewing it helps the doctor providing treatment feel confident you have not changed your mind since making it. A doctor you see when unable to make a decision or communicate your views may question the validity of an advance decision signed many years ago, if there are new or improved treatments, or your personal circumstances have significantly changed. Even if you do not change the contents, it is advisable to sign and date it to indicate you have reviewed it. Give a copy of the reviewed document to everyone with an earlier copy and ask them to destroy the old one. You can change an advance decision at any time while you have mental capacity to do so.