Now, a few years older, and clearly much wiser, John is looking to put all of that behind him and admits that he didn't exactly go about things perfectly.
In a new interview with MSNBC's Ronan Farrow, John admits that there was a turning point where he realized he needed an image overhaul. "I went, 'All right, dude, you did a couple interviews where you were out of touch and you were being a ham, and you were basically break dancing into a nitroglycerin plant, right?'" he explains.
He also admits that it hurt when people "misunderstood" him and called him a womanizer. When asked if he considered himself one, John was very clear in explaining that he definitely did not.
"No. Absolutely not," he said, when the question was asked. "But when you're crafty and you're clever and you go, 'Well, I'm just going to be as strange as they think I am,' then you lose [yourself]. No. 1: You're not playing music anymore. No. 2: You're not feeling anything honestly. And No. 3: You're not saying anything honestly."
One thing John does admit to, though, is having a slightly over-inflated ego in the past. "I'm a recovered ego addict, and the only way that I can be sure that I don't relapse is to admit that I constantly have this ego addiction-every day," he explained, saying that he sometimes steps away from social media for that reason.
"So I do the Grammys and I go home, because if I stay, I get high again," he concludes. The "high" meaning the whole ego boost and everything that goes along with it.
It sounds like John has really learned from his past mistakes and is trying to be a better person all around and we can't fault anyone for that.
Do you guys think John has really turned over a new leaf? Do you think his relationship with Katy Perry has helped?
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Gallery | Katy Perry and John Mayer