So how is Jon Hamm preparing for life after Don Draper? He’s not, really. “The one constant thing I’ve had in my career is now removed,” he tells GQ. “And that’s an eye-opener. Are people still going to take me seriously? Am I just going to do romantic comedies for the rest of my life? What’s next? And I don’t know, you know? I wish I was smug enough to have a grand plan.” RELATED:PHOTOS: Mad Men bench unveiling in New York City One thing he does have, though, is some sage advice from “Breaking Bad” star Bryan Cranston on how to weather the post-series finale emotional roller coaster. Hamm says Cranston told him, “It’s hard, man. It’s hard to let it go. It’ll hit you a couple of different ways at different times.” Follow Ned Ehrbar on Twitter: @nedrick