Mark Ruffalo ‘I Gave It Everything I Had'

The actor opens up on the toughest role of his career

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Talented and successful he may be, but Mark Ruffalo isn’t one to rest on his laurels. So it’s no surprise that the 52-year-old has set the bar high for his latest project: producing for the first time, pulling double duty on screen, and shedding weight for the parts.

“I was a little cavalier about it. I was in my late 40s and I was in the middle of shooting two franchise films, and I was feeling pretty invincible,” the Avengers star tells Collider of getting the miniseries I Know This Much Is True off the ground in 2015. “And then I hit 50 and, of course, I lost all my confidence … I’d bit off way more than I could chew.”

But Ruffalo’s efforts to bring Wally Lamb’s classic 901-page novel to life on the small screen has paid off, with critics calling his performances the best of his career. Directed by