Tevez has re-established himself as a regular in Roberto Mancini's side this season, something that was almost unthinkable last year as he went on unauthorised leave in his homeland for several months, apparently ready to quit the game.
"I knew it wasn't going to be easy to come back," Tevez told the Sunday Times.
"I'd left City and you could almost say I'd left through the back door. But it is almost like there are two Tevezes. There's the Tevez before, who had a problem, and there's the Tevez now, who no longer has problems."
Tevez said the key has been getting his family back together. The striker had requested a transfer from City prior to his walkout when his wife and children returned to Argentina, but now they are all back in England Tevez said he has a different perspective on his football.
"It totally changes everything, your disposition, your humour, just having them close," he said. "If I wasn't selected in the past I'd be in a terrible mood. Now I'm still gutted but I go home, see my daughters, it takes my mind off it and I feel better."