The Queens Park Rangers man admits he is looking for a change in fortunes.
The Croatian midfielder was at Spurs under the stewardship of Harry Redknapp, who has since brought him back to London with the Rs.
But Kranjcar left Tottenham for Dynamo Kiev in 2012 and says his career hasn't been the same since.
And he is looking to embrace the second chance he has been given by Redknapp.
“If you look at my career since Spurs, the last two years have not been the best,” Kranjcar told the London Evening Standard.
“Given an opportunity to prove myself again in the Premier League, I knew I had to get myself in the best shape I’ve ever been in.
"I worked hard for two months to get in good shape. It helps when you are in the team and my goal against Stoke helps confidence.
“From that aspect I am happy with how things are going but I would rather be playing badly and the team winning games.”
QPR face West Ham at Upton Park on Sunday, as they bid to lift themselves out of the relegation zone.
Kranjcar's former club Spurs, however, also face a tough fixture as they host in-form Southampton.