Unless you like constant muscle strain, it is advisable to pack as little and lightly as possible. You can save yourself the bother by writing out a well thought out packing list. Detailed list of the clothes and other stuff I packed. Stick to one or two colors, so that all your clothes mix and match.
Roll garments up into tight tubes to save packing space and avoid major wrinkling.
Do not bring things just because they might come in handy. Hole-punch these pages and place them in a small three ring notebook or organizer. I ended up hole-punching the outside edges of my pages because they had more white space available for the holes. For special packing advice for female travelers go to my Women Travelers page. Packing Links Compleat Carry-On Traveler is a good site to visit for information about packing and offers links to several popular packing lists.