The actor has "has been undergoing psychological coaching, practicing mindful meditation and cognitive behavioral therapy to combat stress and deal with negative emotions at the facility," the outlet reported, adding that the facility costs more than $120,000 a month.
According to the sources, Harington checked into the facility for stress and alcohol ahead of the "Game of Thrones" series finale, which aired on May 19.
“He realized ‘this is it—this is the end’, it was something they had all worked so hard on for so many years. He had a moment of, what next?" one source said. “He’s in the clinic predominantly for stress and exhaustion and also alcohol. His wife Rose is being extremely supportive. Everyone close to him really wanted him to get some rest. Right now, he just needs peace and quiet.”
A representative of the facility confirmed to Page Six that Harington was there: “Kit has decided to utilize this break in his schedule as an opportunity to spend some time at a wellness retreat to work on some personal issues.”
The story came after video of Harington crying while reading about his character killing Daenerys Targaryen (Emilia Clarke) in the finale during a table read circulated widely, garnering millions of views.
Harington said during an appearance on "The Late Show" that he was stunned when he read what would happen in the final episode of the series.
"I was very shocked and surprised at certain events unfolding, "and then I blubbed my eyes out. I cried," he said.
“My final day of shooting, I felt fine … I felt fine … I felt fine … then I went to do my last shots and started hyperventilating a bit. Then they called ‘wrap’ and I just [expletive] broke down. It was this onslaught of relief and grief about not being able to do this again," he said.
"But the weirdest bit was when we came off set and they started taking the costume off and it felt like being skinned … It felt like they were unceremoniously for the last time ripping off this character.”
“That was a time when I started therapy and started talking to people,” he said. “I had felt very unsafe, and I wasn’t talking to anyone.”
Harington said that some of his darkest moments in life came after Snow became one of the top characters in the show.
"My darkest period was when the show seemed to become so much about Jon when he died and came back. I really didn’t like the focus of the whole show coming onto Jon. When you become the cliffhanger of a TV show, and a TV show probably at the height of its power, the focus on you is [expletive] terrifying," he said.