You're 24, and a 10 year old beat you at Chess...?
I know there are some genius kids who are grand masters, but [and I'm going out on a limb here], I'm guessing your cousin isn't Asian(/racism).
On another note, both me and a mate have been waiting for a game called "Battle Vs. Chess"... the release date has been pushed back almost as much as Gran Turismo. That game will probably teach you more than anyone could... with the gimmick of animated battles between Chess pieces.