Andrew Taylor has urged everyone at Cardiff to keep their feet on the ground after a promising start to the season.
Taylor faces his old side, Middlesbrough, at the weekend and the 25-year-old defender is viewing the fixture as a measuring stick as to how far the Bluebirds can go this season.
He knows his club have made a 'decent start', but recognises there is a need to not get carried away.
He told the Evening Gazette: "Cardiff City are a play-off team, if not better. That's why I came here.
"Right now, though, we have not achieved anything. There is a whole lot of work to be done and we have to keep our feet on the ground.
"Cardiff City have made a decent start, but there is a long way to go."
In contrast, Cardiff chairman Dato Chan Tien Ghee believes the 'sky is the limit' for Malky Mackay's side.
The Bluebirds currently sit third in the Championship, unbeaten in their last 11 matches, while they are also in the Carling Cup semi-finals and their chairman is optimistic their good form will continue.
After a failed promotion push last season, Chan Tien Ghee is confident success is just around the corner.
He told walesonline.co.uk: "In many ways we are up there [the Premier League] already because we have a great club and great people within Cardiff.
"Cardiff City have a lot more than that to offer. If we continue this way the sky is the limit."