Step one: Review your personal balance sheet.
Verify that any new assets are listed and that any assets you liquidated are removed from the sheet.
Look at the details of how your assets are held, as well. Have any of your assets changed how they are held, such as moved into a trust or dispersed from a trust?
For any beneficiary designation property (life insurance, retirement plans, and corporate benefits), make sure you have correct information about who is named as primary and secondary beneficiaries.