Don't let your passport get in the way of your travel overseas! The U.S. Department of State recomments renewing your passport at least nine months before your passport expires. You can do this by mail if your current passport was issued on or after you turned age 16, your legal name has not changed, and your passport is not damaged. You would use Form DS-82 to renew by mail. The post office and the US Dept. of State's web site have this form. You need to produce new passport photos to send in with your application - 2" X 2" size with good lighting, white background, and a clear focus. Place a stable at each corner of the photo. Place the completed DS-82 with attached passport photos, passport fees, and any additional documentation that is needed into an envelope (Tyvek brand is recommended). For more specific details see the travel tips web site. If you cannot renew via mail, the schedule an appointment for yourself at any regional passport agency.