As 2011 comes to a close, the editors of HBR.org are taking a look back at the most popular blog posts of the year to find out what most preoccupied you, our readers. These 11 posts all hit a common nerve and went viral; it’s no surprise that most of them contain advice about how to succeed and be happy at work. We can’t resist including another 11 posts, a hard-to-agree-upon sampling of the ideas we were proudest to publish and discussions we most enjoyed hosting this year. If you have some free time during the holidays to catch up on your reading, we hope you’ll find this list a good place to start.