Demi Lovato is "grateful" for every supportive message she received this week for celebrating being sober for the last four years.
The 'Cool for the Summer' singer reached the sobriety milestone on Tuesday (15.03.16) and admits she has been blown away with the huge volume of "shout outs" for her acknowledging her personal achievement.
She posted on Twitter: "So many incredible "4 year" shout outs from radio stations, tv channels, magazines, and most importantly my fans ... I'm so unbelievably grateful for every single tweet, every comment, every text and every call. I love all of you ... It IS possible!!! (sic)"
The pop star checked into rehab in 2010 at the age of 19 to be treated for alcohol and drug abuse, as well as an eating disorder and persistent self-harming.
Demi, now 23, has never fallen off the wagon since confronting her demons head on.
Tweeting on her sobriety anniversary earlier in the week, Demi posted online: "This last year I experienced so much life and too much death ... But I made it through ... Sober. #4Years #GodsWill (sic)"
Another cryptic tweet which seemed to refer to the cycle of life, read: "Most people die but others just go ... She's still out there and the chasm grows ... Steady are the feet in the morning glow. (sic)"
Demi - who is in a relationship with Wilmer Valderrama - also urged her fans to believe "anything is possible" because during her darkest days she never believed she would get clean and turn her life around.
The pop star tweeted: "I can't believe I have 4 years on Tuesday ... Anything is possible."
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