The heart of every estate plan is a will, also known as a last will and testament. This legal document puts you in control of who inherits your property and who would take care of your children if it were ever necessary. Without a will, state law determines these issues.* Making a will rarely involves complicated legal rules. If you are like most people, you will not need a lawyer. With good do-it-yourself materials, it is not difficult to make a will that takes care of basic concerns, such as leaving a home, investments, a small business, and personal items to your loved ones.