Making clear how physical assets are to be distributed after you have gone is relatively simple. Perhaps a more important aspect to end of life planning is to establish well ahead how and in what circumstances one might wish ones medical life-support to end in the event of loosing the mental capacity to make decisions for oneself. It is unfair to expect relatives and friends to make these decisions without knowing how one would have wished them. Writing an Advance Decision (a.k. the Living Will) document is straightforward using the guidance provided by organisations such as Compassion In Dying. Click on the above logo or on this link for more information.