The former Rangers star scored the equaliser in Tuesday night's 1-1 draw with St Mirren to mark his first goal for Killie upon his return and is now eager to continue that scoring form before he worries about his future in the summer.
"You are always looking to prove to yourself that you are good enough to be a professional footballer. It doesn't matter what level it is at," he told Press Association Sport.
"It's been a tough couple of years for me but it's time to move on and get myself back playing and scoring goals. Coming back to Killie has given me that platform to work from and hopefully tonight is the start of a few more before the end of the season.
"Between now and then, I'm hoping to get a few more 90 minutes and a few more goals. We'll see what happens after that.
"I've learned over the last couple of years not to take anything for granted in football. That's a fact of life. But I'm looking forward to closing the season out with Kilmarnock and we'll take it from there. I might be here next season, you never know."