Demi thanked everyone who has been by her side.
Demi thanked God for keeping her "alive and well." She also said she wouldn't be here writing the letter if it weren't for her family, her team and the hospital staff. She's reportedly set to leave the hospital this week and head straight to rehabilation center to seek treatment.
Luis Fonsi sent his love.
The Puerto Rican singer, who worked with Demi on the song "Échame la Culpa," sent her a loving message in the comment's section. Singer Sam Smith also sent a sweet note.
J.Lo also commented.
"Oh baby...sending you love," the Shades of Blue actress wrote. Singer Ty Dolla Sign sent Demi his support in the form of prayer hands emojis.
Khloe Kardashian said Demi is a "warrior."
The reality TV star's message was super sweet.
Lauren Jauregui expressed her support as well.
The Fifth Harmony singer, who met Demi on The X Factor, expressed her love on the post, as well as designer Jeremy Scott.
The Rock sent some inspiring words.
The Rock knows a thing or two about overcoming adversity, so this message was so moving.
Becky G commented on the post.
It's so sweet to see all of these celebrities send Demi love when she needs it the most.
Paris Hilton took to Twitter to send a message.
Paris reminded Demi how much she is loved.
Rob Thomas sent his love.
The singer also took to Twitter to say that Demi only needs positivity sent her way at the moment.