PHOTO: Demi Lovato honors her dad a year after his death

Demi Lovato has been outspoken in her support for mental health awareness, and is using her dad’s memory to help others.

Demi Lovato lost her dad a year ago, and took to Twitter on Friday to honor him in the best way she could.

Can't believe it's already been a year.. Wish I could've hugged you one last time.. RIP Daddy, I love you. pic.twitter.com/kuR6p1hkTx

— Demi Lovato (@ddlovato) June 20, 2014

The photos Lovato posted were taken of her and her dad Patrick when she was a little girl. Patrick Lovato died on June 22, 2013 at the age of 54. Although no cause was given for his death, he had reportedly been diagnosed with cancer, according to E! News.

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Lovato has been very open about her battles with mental illness and addiction, and used the occasion to share that her dad struggled with his mental health as well.

My dad suffered from severe mental illness so at least there's peace in knowing he's not suffering anymore.

— Demi Lovato (@ddlovato) June 20, 2014

The pop singer and her dad hadn’t talked much in recent years, and she only revealed after his death he had been dealing with his own issues. After he died, she told Good Morning America, “I’ve dealt with mental illnesses, and my father also dealt with mental illness. He wasn’t able to function in society very well,” she said. “I’m handling it OK. My father and I didn’t have the most ideal relationship. But at the end of the day, he’s still my dad. I grew up with him, and he’s a wonderful person.”

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Lovato is not only an advocate for those struggling with mental illness, she also created the Lovato Treatment Scholarship as a way to honor her dad. The scholarship helps fund treatment for someone struggling with their mental health or addiction.