Jon Hamm has said that he'll find it tricky to walk away from Mad Men when it's over and that it has been an emotional journey.

Hamm is currently shooting the seventh and final season of the hit drama and has said he has mixed emotions about the series ending.

Speaking to The Huffington Post the actor said, "It's been a big, big, big part of my life. I've got a lot of really good friends in the cast and crew. It's going to be tricky.

"I'm not going to say I wish it wouldn't end, because everything has to end, but it is what it is. We're going to have an emotional journey once we wrap it up. We'll walk away and lock the door."