"He begins his treatment immediately," a source close to the singer tells ET exclusively.
"It was his decision [to check into the facility]. He wasn’t required to go or forced to go. It was 100 percent his decision. Ultimately, what led to the decision was that he saw the impact his health was having on his life, both personally and professionally, and he couldn’t pretend these problems weren’t affecting his life," the source says.
"Aaron’s decision has been on the table for a little while. Various people close to him have been encouraging him," the source adds. "Those closest to Aaron, including his family members, fully support him in this decision."
ET has also learned that the facility Carter is checking into is much more of a wellness center that helps people deal with anxiety, stress and eating disorders, among other things.
"There were many people that recognized Aaron’s potential, what he could do, if he just got back on track,” the source continues. "They put it on the table for him and said 'make a choice' and fortunately he made the right choice."