Have a will drawn up by an attorney. Leave one copy with him or her and one with a trusted friend or family member (e.g., the principal beneficiary, your spouse, your child, etc.) These are necessary steps for proper estate planning.
One thing you should not do is put your will in a bank vault or safe deposit box. Keep your will and other important papers in another safe place. Safe deposit boxes are often sealed for a period of time at the owner's death.
Make sure your insurance coverage is up to date. Major changes in life circumstances such as marriage, the birth or adoption of a child, divorce, or retirement can change your insurance needs.