And he is set to be the first player to reach double figures in semi-final appearances when the Irish club take on ASM Clermont Auvergne at Stade de la Mosson.
Now 36, O'Gara has been a key figure in the Munster line up for 16 years - overall racking up 2,555 points in 235 appearances.
"This is the only game that matters," said O'Gara. "My head is on Clermont and that's it until the end of the season and then we will make a decision.
"Munster has given me everything so I want to make sure I am up for another season. I am an all or nothing person.
"I have been lucky enough to be in this team for so long so if I feel I am playing well that's the most important thing."
O'Gara's hunger to try and add to the two Heineken Cup winners' medals he won in 2006 and 2008 is a huge positive for Munster who will be without the injured Doug Howlett and Donncha O'Callaghan for their biggest test of the season so far.