She hit headlines again just days later by stumbling onstage during a tribute to Aretha Franklin at the Grammy Awards - but she plans to put the embarrassing experiences to good use on her new TV venture.
Aguilera, who split from husband Jordan Bratman last year (10), tells UsMagazine.com, "There have been things that have happened on stage that any performer can absolutely relate to and I'm so happy that I get to share these moments with them (contestants) in such an intimate environment... people make mistakes and go through things in life and I'm definitely taking that into the show.
"I can laugh about my own hiccups and my own experiences in life because I'm getting through it. But I get to share these experiences with these people and I get to say not every performance day is going to be a great day.
"Sometimes you could be having the worst day of your life and you have to get up on that stage and you have to give to your fans in a way that they would never know the difference. You have to lose yourself in that moment and you have to be so involved. Take yourself out of your own headspace or use whatever you're going through and put it into the passion of your song."
The Voice, which also features Cee Lo Green, Blake Shelton and Adam Levine as judges of the singing competition, kicks off later this month (Apr11).