when can u call urself an activist?

I'm very passionate about development. I have a need to contribute to the development of my country. I think we live in a very interesting time in the history of our country South Africa, we have a chance to shape and contribute into building the future of this country. no excuses no nothing. its like 50 years from now I'll be able to say I did ABC in the development and nurturing of our democracy. so I wouldn't call myself an activist or maybe I am.