The “Sorry Not Sorry” singer, 27, marked the two-year anniversary of her near-fatal overdose on Friday, calling it her “miracle day.”

“Today is my miracle day. I’m so blessed to have one. It represents how the Dr’s at Cedar’s Sinai saved my life,” she wrote in a Notes app letter posted to social media. “How my life has become something beyond my wildest dreams.”

Lovato said she was in disbelief that after only two years from that day would she find herself engaged to “love of my life” Max Ehrich and sober.

“…I can genuinely say I feel free of my demons,” she continued. “Each and every one. I never thought this feeling was possible.”

The “Confident” singer chalked up her turnaround not only to Ehrich but also to loving herself.

“And it’s not just because I fell in love (although that didn’t hurt), but because over the past 2 years, I’ve done more work on myself than I have in my entire life,” she wrote. “Things that used to keep me down for weeks or even months, pass like tropical storms because my relationship with God has provided me infinite security. Long before I had an engagement ring on my finger, I had the word ‘me’ to remind myself that no matter what, I vow to love myself.

“You can’t fully love another without loving yourself first.”

She ended her note thanking God for providing her with “the strength to fight through my darkest times.”

Lovato was hospitalized in July 2018 for a heroin overdose. She spent weeks in the hospital before moving into a rehab facility for the remainder of that year.