There are a number of websites that have packing light strategies - some of them may seem ridiculous, but you can pick up useful tips to help lighten your load:

http://www.onebag.com/
http://www.travelite.org/index.html
http://www.ricksteves.com/graffiti/graffiti82.html
http://www.verber.com/mark/travel/packing.html (this website has a long list of links to other traveling light websites)

A search in this forum or in TravelBuzz for threads about packing lightly, traveling lightly, or traveling with carryons only will also turn up lots of good ideas.

Congratulations on taking the first steps towards traveling light - it really is so much easier!