Left click on your user name (the underlined part just above "Earning My Ears"). The third option is "Find more posts by Name". Click on that and you're in business.
Another way is to look for the check mark next to the name of the thread...whenever you start a thread or reply to a post, this check will appear. Scroll down and you'll find them quickly. Also, once you post, you'll have the option to subscribe to the thread...you'll get an email when someone replies along with a link to take you to it.
Or, you could click on "User CP" (in the light blue strip near the top of this page), and it will show all of the posts you are subscribed to, including those you posted yourself.