Barrino told VH1: Behind The Music that she had reached a point where she no longer cared about living and tried to end her life by taking a large amount of pills on August 10, according to People.
"I didn't have any fight in me. I didn't care about anything. I just wanted out," said the 'I Believe' singer. "I just sat in the closet and looked at the mirror and took all the pills in the bottle. I wanted to go to sleep and just be at peace. I knew exactly what I was doing. You can't accidentally take a whole bottle of pills."
The American Idol winner asserted that disappointment with several people in her life led her to take drastic action.
"I was tired of people doing me wrong, constantly, over and over again, dealing with my family, my father, dealing with men and their (expletive) - I was tired. My head was hurting me. I was over it."
However, surviving the overdose has given the popstar a new drive to never again let herself come so close to death.
"I realised how people end up in the grave. Because that one moment (snaps her fingers) of just breaking or feeling like I can't, I can't go on, it's too heavy. That was somewhere I don't ever want to go again."
While recovering in the hospital, a nurse urged Barrino to fulfil her potential and inspired the singer to turn her life around.
"My nurse Melanie was a blessing into my life because she didn't tell me what I wanted to hear. She told me what I needed to hear," said the star. "And she looked at me and said, 'You gotta get up, and you've gotta get out of here, 'cause you haven't fulfilled your destiny'."
The interview with Barrino for Behind The Music is to air Tuesday on VH1.