Robert Downey Jr. says settling down has been key to his Hollywood comeback

The 'Iron Man' star revealed his marriage to Susan Levin is the secret to a
happy life, and leaving his wild past behind has made this his best year
yet.
The 43-year-old actor said: "This is probably the most back-breaking,
a**-kicking work year I've ever had. It's also been the most manageable year
I've ever had I feel now that I can leap buildings in a single bound, but
I'm not underestimating how difficult it is. Life is really, really hard,
and I need to stay focused on the day-to-day stuff."

Image WENN