"I think it's all between my ears, to tell you the truth," said Wolf. "I think I was trying to dictate the result before throwing the pitch and not just throwing it. You can't control the result.
"You go up there, you throw the pitch. Whatever happens after that happens. I think I was just trying to control the result and be too perfect. When you do that, you make more mistakes than you would otherwise."
Wolf, who signed a three-year, $29.75 million contract with the Brewers during the offseason, did not think he was trying to live up to his contract, however.
Through 13 starts, Wolf is 4-6 with a 5.31 ERA, giving up 46 earned runs on 88 hits through 78 innings of work. In his most recent outing, Wolf gave up a career-high five home runs against the Cubs.
Still, Wolf remains confident in his abilities.
"I think it's just a matter of getting my mind in the right direction, because it's not a matter of stuff," Wolf said. "My stuff's probably better this year than it was last year. It's just a matter of being aggressive and having the right mind-set."