Lack of sleep often makes people miserable, so hedge your bet when you are traveling and bring your favorite pillow with you. Pillows generally stuff easily into a carry-on bag and can serve as a terrific insurance policy against sleepless nights. Traveling can sap your energy by various means, including jet lag, but one of the best ways to regain that lost energy is to get plenty of rest. When traveling on a business trip or a family vacation, the pillows in your hotel room (or on a cruise ship or train) may not be great, but you can always pull out your favorite pillow and know that blissful sleep is only moments away.