Principles of Preserving Wealth The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. What Is My Current Net Worth? Use this calculator to estimate your net worth by adding up your assets and subtracting your liabilities.