If you haven't yet read the articles in the left column of the home page of this site, that's the place to start for lightening your pack. Starting with those articles, I have been able to cut my pack weight (total weight for a 9-day trip) in half--from 50 lbs. in the late 1980's (before a knee injury stopped my backpacking) to 25-26 lbs. now.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey