The fastest way is to go to the right of the screen, scroll down to the "My LQ" list then hit 'My Posts".
You can also click any username, then hit "Find More Posts by .....". Or you can go to your profile page, go to the "Statistics" tab then hit "Find all posts by .....", and there will be other ways to find all your posts that I cant recall offhand or never knew in the 1st place LOL.
*edit- beaten to it by EricTRA, and I spose that I should have shown you how to find your threads as well, not just your posts... the process is pretty much the same for threads and posts though.
Last edited by cascade9; 05-29-2011 at 03:18 AM.