Johnny Manziel revealed he's been diagnosed with bipolar disorder and is on medication to treat the disease.

Manziel said he was diagnosed with bipolar disorder "about a year ago." He added that he has stopped drinking, saying that he had used alcohol as a way of "self-medicating" as he battled depression.

"At the end of the day I can't help that my wires are a little bit differently crossed than yours, I can't help my mental makeup of the way that I was created," Manziel said. "But I know if I stay on these meds and I continue to do what I am doing right now ... I think my dad, my mom, I think (girlfriend) Bree (Tiese), would all agree that they see, a drastic change."

Manziel is attempting a return to the NFL.

"I don't know what kind of comeback it will be," he said, "but I know I want to get back on a football field to what brought me so much joy in my life and it makes me happy doing as my job."