If you wanna know more about that, here's a follow-up intel (spoilers) we just learned:
We'll see him (Rick) maintain said sanity by taking less of a leadership role this season. "It's not so much Ricktatorship-y," new showrunner Scott Gimple says. In fact, Rick will return to his roots as an investigator. "It's a man trying to reclaim the man he once was," Andrew Lincoln says. "We find him battling or trying to subdue the brutality that's inherent in this man and also maybe relinquishing responsibilities for leadership for the sake of his family. You're seeing a man try to be a single dad in an apocalypse. It's a challenge."
Source: TV Guide
The Walking Dead season 4 launches on Sunday, Oct.13 on AMC.