In a recent interview with Barkha Dutt on NDTV, Karan Johar opened up on his Two year battle with depression and how he dealt with it. According to Karan, he was in a meeting when he felt like he was going to cardiac arrest and when he went to a doctor, he told him he was really having was an anxiety attack. From there, a psychologist said he's suffering from depression. 

"It was the darkest period of my life. I can’t explain the pain, anxiety, anguish. [I felt] helpless. Unhappy. Sad. Wanting to get onto a flight, always leaving the city… and walking the streets of other cities with nothing to say to anyone. Not even getting out of my bed from my hotel room sometimes. I wasn’t able to share this with anyone. I was making up meetings and reasons for me to leave the city. I found comfort in sleeping on a long-haul flight, waking up in a city where I didn’t have to meet people."