United Kingdom, July 11 -- AJ McLean has vowed to maintain his sobriety "all the way".

The Backstreet Boys singer opened up in 2020 about his 20-year addiction to drugs and alcohol, but then relapsed the following year and now he is in "the best head space [he's] ever been in [his] life" after conquering his demons once more and is confident he can stay sober this time.

He told People magazine: "Towards the end of the DNA tour, I got sober again for the last time.

"I'm sticking this one out all the way. It's a daily thing. But I have finally done what has been suggested amongst the sober community, and my life has flipped in a positive way."

The I Want It That Way hitmaker goes to the gym "six days a week," eats "clean" and maintains ...