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 | Related Content Do You Feel Lucky? Recent changes in estate tax laws could affect the strategy you have in place. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.