Lovato wrote on Twitter: "Feels amazing to have shot a music video when 8 mo. ago I was terrified of the camera. Very thankful. Couldn't have done it without y'all.
"I love the friends I have today.. The support I have from them has gotten me so far... We're back baby!! Seriously guys.. We all know this last year hasn't been the easiest... But today we officially came back."
Lovato has been keeping fans up to date on the progress of her third record, recently tweeting that she has been writing with former American Idol judge Kara DioGuardi. She is also working on a duet with an unidentified artist.
She released her first album Don't Forget in 2008, with the follow-up Here We Go Again arriving the following year.
Watch Demi Lovato's music video for 'Don't Forget' below: