"Time to put the feet up and make other dreams come true," wrote O'Connor — who recently released her book Rememberings — on Twitter

Sinead O'Connor
Credit: Andrew Chin/Getty

Sinéad O'Connor is stepping away from music.

On her Twitter Friday, the "Nothing Compares 2 U" songstress announced that she would be stepping away from music and touring following the release of her album NVDA next year.

"This is to announce my retirement from touring and from working in the record business. I've gotten older and I'm tired," the 54-year-old tweeted. "So it's time for me to hang up my nipple tassels, having truly given my all. NVDA in 2022 will be my last release. And there'll be no more touring or promo."

"It's not sad news. It's staggeringly beautiful news. A wise warrior knows when he or she should retreat: #MeTime ❤️," she added. "It's been a forty year journey. Time to put the feet up and make other dreams come true ; )"

A rep for O'Connor confirmed her retirement to PEOPLE.

Over the weekend, O'Connor added that the release of her book Rememberings reminded her that "I'm my own boss."

"Apologies if any upset caused to booking agents or promoters or managers due to my tweeting about my retirement. I guess the book made me realise I'm my own boss," she wrote. "I didn't wanna wait for permission from the men, as to when I could announce it. Also, I'd had a few whiskeys."

The songstress made clear that she wouldn't close the door to the possibility of joining Ireland's The Voice, though. I "have always wanted to be one of the artists involved in presenting and mentoring," she wrote. "But never was free to do it. Am now :)."

sinead o connor
Sinéad O'Connor in 2019
| Credit: HGL/GC

O'Connor recently opened up to PEOPLE about her childhood trauma and mental health.

Diagnosed with bipolar disorder as well as complex post-traumatic stress disorder and borderline personality disorder, O'Connor says, she hit a low in 2015 after undergoing a radical hysterectomy to treat endometriosis. The procedure — and the surgical menopause that followed — flattened her.

"When I had the surgery, I was terribly triggered," said O'Connor, who has spent the years since in and out of psychiatric facilities.

Added O'Connor: "You can never predict what might trigger the [PTSD]. I describe myself as a rescue dog: I'm fine until you put me in a situation that even slightly smells like any of the trauma I went through, then I flip my lid. I manage very well because I've been taught brilliant skills. There was a lot of therapy. It's about focusing on the things that bring you peace as opposed to what makes you feel unstable."