The 33-year-old is hungry for more success and uses motivational videos by Schwarzenegger to fire himself up.

"His six success rules are trust yourself, break the rules but not the law, don't be afraid to fail don't listen to the critics, work your butt off and give something back,” said Robertson.

"I'm really into sport and motivational videos and speeches and I've just convinced myself it's not enough and I've got to win more, more, more.

"When I hang up my cue and I can relax and reflect on my career I can be proud and content with what I've achieved - but at the moment, I'm not."

Robertson will play Hong Kong's Marco Fu in the first round at Alexandra Palace next month. 

James Clark