If you have or know a child with low self-esteem, here are some helpful resources (so we can break the cycle):

http://kidshealth.org/kid/feeling/emotion/self_esteem.html

http://www.cyberparent.com/esteem/

http://www.childdevelopmentinfo.com/parenting/self_esteem.shtml

http://www.myoverweightchild.com/self-esteem.html

http://www.pamf.org/teen/life/depression/selfesteem.html