Probably you would add some stuff like "I have chosen to die without and pressure and I am the only one responsible of my death and I want my left money/stuff/things to be this/that" or something. I have seen that in a book about suicide only if I could remember it's name. I mean I would add the part I said, but of course, everyone's condition is different so it really depends on the question "Do I feel like adding it?" I guess.