One way to do it is to roll the cursor over your (or anyone's) user name on any page and click. That opens your (or any user's) profile page. That page lists recent posts and offer options to list all posts by you or threads started by you.
"It takes a lot of devotion and work, or maybe I should say play, because if you love it, that's what it amounts to. I haven't found any shortcuts, and I've been looking for a long time."
-- Chet Atkins