Periodically review your will to keep it up to date. Keeping it current is just as important as making one in the first place. Changes in your life such as marriage, the birth of child, death, crippling accident, change of witnesses, purchase or sale of property, a change in your financial status — or a change in the estate law may make important revisions or a new will advisable.
A will drawn in another state can be valid; however, revisions in relation to New Jersey laws may be prudent. You are free to change it any time but do it correctly.