Hands down one of my favorite agencies is Bulldog Drummond out of San Diego (and not JUST cause I'm in love with San Diego). Not only do I enjoy their work, but they also post insightful, often humorous, and on-point blog entries.
I particularly enjoyed their "WILL YOU GO THROUGH 2015 OR GROW THROUGH 2015?" post. (And not just cause the author also comes out as a massive list-writer). All the items on the list resonated to some extent with me, but especially #4, the idea of "STOP/START/MUST DO" and #9:
It's actually advice I frequently give to others, but am not always so good at following myself!