Jamaica's fastest woman Shelly-Ann Fraser-Pryce is motivated as ever ahead of this summer's London Olympic Games, where she will attempt to defend her title.

After being overtaken in recent years by compatriot Veronica Campbell-Brown and World Champion Carmelita Jeter as the world's best 100m sprinters, the sprinter admits she is anxious to regain her title at the London 2012 Games.

"The thing with success is, when you get it you want it," Fraser-Pryce told NBC's Rock Centre. "I think that the last couple of years have actually made me more hungry than I was, and now that I realise my potential and I realise that I can do so much once I push myself to the limit, maybe I can do that much better."

Following an amazing two-years run, where she took gold in consecutive major games, the 2008 Olympic Games and the 2009 Berlin World Championships, Fraser-Pryce finished out of the medals at last year's Daegu World Championships, after struggling with injury the previous season. Fraser-Pryce finished behind winner Jeter, Campbell-Brown and Trinidadian Kelly-Ann Baptiste.

Fraser-Pryce burst on to the scene as a fresh-faced youngster in 2008, winning the local national trials before going on to shock the nation and the crown by claiming the title at the Beijing Olympic Games. Fraser-Pryce clocked an impressive 10.78 seconds to lead a Jamaican sweep of the event finishing ahead of compatriots Sherone Simpson and Kerron Stewart. The diminutive sprinter then went on to prove that her Olympic run was no fluke by also capturing gold a year later at the Berlin World Championships. The diminutive sprinter went on to better her time, clocking 10.73, the fourth fastest time in the event's history, and a Jamaican national record.