The former movie star - whose tenure as Governor of California will come to an end in January next year - admitted he is weighing up his options for next year and a return to his action star days could be a possibility.
Arnold - who made a cameo is Sylvester Stallone`s `The Expendables` earlier this year - said: "It could be that fighting climate change would be the main thing. It could also be that it would be one of five things that I would do. It could be showbusiness. It could be business in general."
The `Terminator` actor has had successful careers in movies, politics and bodybuilding and thinks he has thrived in each of these areas because he knows where his strengths lie.
The 63-year-old star said: "My whole life I was always very ambitious but I was smart enough to always look, what is my talent, what do I have to offer the world? Then you go with that."
Along with considering a return to acting, Arnold is currently launching a global war on climate change and admitted while it is difficult to interest people in environmental issues, he has a plan.
He said: "People get stuck and fall in love with their slogans and with their little agendas. You-ve got to make it hip. You`ve got to make it sexy to be part of this movement.
"I think that I have the talent of speaking the language in such a way so that the world understands it rather than making it complicated."