Well, there're these things you do when you're older (cough cough). "Older" is different for different people, with the factors of family, children, parents, income, inheritance, assets, and location being first order parameters in the equation.
Of the things every household to be adulting well, even those households of one, the top three are:
1. A will
The legal document listing what you have, where the big things are, who gets what, and how you want the legal ending of your life to be handled.
2. A medical directive
What happens if you are disabled or unable to decide for yourself? Who decides to pull the plug, and do you want them to pull the plug? These directives vary by state.
3. A spreadsheet or other document listing all bills, the bills account numbers, how they come in (paper, electronic, push or pull / sent or received), and how they are paid.
