Georges St-Pierre admitted that he has lost his will to fight inside the Octagon, but the former Ultimate Fighting Championship welterweight champion is not yet ready to call it quits for good.

St-Pierre, who announced in December that he is stepping away from the sport due to personal reasons, hinted at a possible comeback, but the former welterweight kingpin said that he needs to find the desire to compete again before considering a return to the Octagon.

"After my comeback against Carlos Condit, it was a lot of fun. It was a great training camp. After that, not so good, and the last one, not good at all. I lost the motivation. I lost the fun of it," St-Pierre said in AXS TV interview. "I need to find the fire back. The feeling that I want is that 'need' to compete again."

St-Pierre, who holds an impressive 25-2 UFC fight record, relinquished his title in December, a month after successfully defending it against Johny Hendrix at UFC 167 on November 16 in Las Vegas.

The 33-year-old Canadian cited personal reasons over his decision to step away from UFC indefinitely, but sources indicated that St-Pierre was frustrated over the promotion's handling of drug testing.

St-Pierre opened up the issue in the recent interview, saying that UFC should strongly consider implementing Olympic-style drug testing procedure to avoid future incidents that could hurt the sport.

"They need to make it more like Olympic drug testing - make an independent organization that doesn't have any affiliation with the money of the organization," St-Pierre said.

St-Pierre insisted that he wants to help MMA reach a new level and he confidently said that strict drug-testing procedures could work wonders for the sport.

"The only thing I wanted to do is to help the sport, to raise another level. If you want it to go worldwide then it's the next step to follow, like judo or any other sport," St-Pierre said. "We're lagging behind and it's normal because it's a new sport and we're still trying to figure out how to make this thing [work]. But that, I believe, is the next step."