Brian_Wilson

Beach Boys founder Brian Wilson, who has long struggled with his mental health, announced Thursday he's postponing his June tour because he's "mentally insecure" and "struggling with stuff in my head."

In a note to fans posted on his Facebook page and website, Williams, 76, expressed regret that he is postponing his June shows, including a June 14 performance at the Hard Rock Hotel & Casino in Atlantic City and multiple concerts at Nashville's Schermerhorn Symphony Center.

"It is no secret that I have been living with mental illness for many decades," he wrote. "I had every intention to do these shows and was excited to get back to performing. I've been in the studio recording and rehearsing with my band and have been feeling better."

But, as he explained, "Then (mental-health issues) crept back and I’ve been struggling with stuff in my head and saying things I don’t mean and I don’t know why. It’s something I’ve never dealt with before and we can’t quite figure it out just yet."

Wilson wrote that although his mental-health struggles have been "unbearable" at times, he's been able to live a "wonderful, healthy and productive life" with help from doctors and medications and with support from family, friends and fans.

He noted that his most recent setback came after his third back surgery.

"As you may know in the last year or so I’ve had 3 surgeries on my back. The surgeries were successful and I’m physically stronger than I’ve been in a long time," he wrote. "However, after my last surgery I started feeling strange and it’s been pretty scary for a while.

"I was not feeling like myself. Mentally insecure is how I’d describe it. We're not sure what is causing it but I do know that it’s not good for me to be on the road right now so I’m heading back to Los Angeles."

He said he would make up the shows later this year after he rests, recovers and works with his doctors on a long-term solution.

"The music and my fans keep me going and I know this will be something I can AGAIN overcome," he wrote, signing off with "Love & Mercy."

Although Wilson's note said he's postponing his June performances, the Schermerhorn told customers that his Nashville shows are canceled and there is "no rescheduled date at this time."