The Dilbert Blog
I'm surprised no one's mentioned this guy. His blog is very entertaining and tohught-provoking and some posts are about PD, like this one:
The Dilbert Blog: Career Advice
If you've read The Dilbert Future he concludes with stuff related to law of attraction, and how he used his process of affirmations (writing his goals fifteen times a day and visualizing it) to accomplish a bunch of things, including becoming a very successful comic artist/author.