On this Leader's Corner episode we talk to our friend David Zahl about leadership lessons he's learned in marriage and in building Mockingbird. A few quotable moments from David: (Read all of his points over at the blog) "Just because something doesn't happen immediately doesn't mean it's not going to happen. Stick with it a little longer than you think you should." "You can get through almost anything if you feel like you've got a partner, someone who's got your back." "The demand...