Kit Harington, who played Jon Snow on "Game of Thrones," says he's proud of his sobriety journey.John Nacion/Variety via Getty ImagesKit Harington told GQ he was "lucky" to get sober before becoming a father.The actor went to rehab in 2019, before the "Game of Thrones" series finale.Alcohol misuse cost the US $249 billion in 2010, per the National Institute on Alcohol Abuse and Alcoholism.Kit Harington, 37, is proud of his sobriety.In an interview published on Monday, the "Game of Thrones" star told GQ that getting sober changed him for the better."I was so lucky I got sober before having kids," Harington said, because at one time, it felt "physically and emotionally impossible" for him not to drink again.Harington — who played Jon Snow on the hit HBO series for almost a decade — checked into a "wellness facility" in 2019 to "work on some personal issues," his rep told People then.According to Page Six, Harington had entered rehab for "stress and alcohol use" ahead of the airing of the "Game of Thrones" series finale, which "really hit him hard."Reflecting on his sobriety and fatherhood, Harington told GQ that both experiences shone a new light on the way he viewed himself."Everything before kids is research.