In preparing for the future you need to consider documents which allow family members and loved ones to look after your financial affairs and make medical decisions on your behalf when you are unable to or incapable of doing so. These matters have already been canvassed above under the heading Enduring Powers of Attorney and Enduring Guardianship documents.
Where should the inevitable occur it is having a correctly drafted Will in place that allows you to make adequate provisions for your family members and loved ones.