The father-of-four was awarded an MBE in the 2024 New Year Honours for services to rugby union.
“I was lost, needed help, direction, time away from the spotlight to be able to take a deep breath and think,” Hogg posted on Instagram.
“I’ve been so concerned about what people thought of me, how I was coming across, the impact I would have on them and how I would survive the day. I lived every moment in my head and it wasn’t healthy.
“Spending time at a rehabilitation centre, allowed me to reset, learn about myself and talk about how I felt, without being judged.
“It’s not been easy but it was the right thing to do. Taking accountability was the first step in the right direction. I accept I have made mistakes and understand why l acted as I did.”