Manchester City goalkeeper Joe Hart is not concerned by recent criticism, saying that he is happy with his performances so far this season.
The England international has come under fire after some costly mistakes this season, including a soft goal at his near post in their 1-0 loss to Sunderland recently.
Hart is not worried though, saying that he can't be perfect all the time, and he is happy with the effort he is putting in.
"If you weren't doing well, and winning things, then people wouldn't be interested in what you're doing," he told Sky Sports.
"People are paid to make comments and do punditry but you've got to be strong and confident that you can turn up week in, week out and give the best you've got.
"Of course. I work hard, but sometimes I don't save it, it's as simple as that, it's not through lack of effort or concentration.
"You'd like to be perfect and make every save but, as much as we try to be, it's not going to happen."