But, as life happens, Demi has broken her sobriety.
Instead of hiding it from the world and making it a bigger issue for herself, she is opening up in the best way she knows how: through her music.
Demi has released a new single called "Sober" where she explains how she has relapsed while apologising to her family.
"I got no excuses/ For all of these goodbyes," she sings to open the song. "Wake me up when the shakes are gone/ And the cold sweats disappear/ Call me when it’s over/ And myself has reappeared."
She continues, "Mama I’m so sorry I’m not sober anymore/ And daddy please forgive me for the drinks spilled on the floor.
"I’m sorry that I’m here again/ I promise I’ll get help," she sings. "It wasn’t my intention/ I’m sorry to myself."
Ouch.
Listen to the full song below:
If you, or someone you know needs help, speak confidentially to a trained counsellor 24 hours a day:
Kids Helpline on 1800 55 1800.
Lifeline on 13 11 14.