Originally Posted by bonjovi90

He's talked about psychological reasons for his vocal problems before the tour. Not in detail, but I guess that since he went through some sort of depression it must've affected his usage of his voice as well. At least to some degree. Remember that he stated numerous times that he "couldn't even sing in the shower anymore". He most likely had lost his confidence in his voice and consequently the secureness of knowing that he can entertain a crowd in the way that he used to do. So in the end I guess low self esteem really was a factor.