If you want to change the world, change yourself. If you want to make the world a better place, make yourself better.
While you are at it, seek for the role in the world that lets you maximize that thing and transform your surroundings, so more people can benefit from you.
That role is hardly going to be a president, a doctor, an astronaut. The world doesn’t benefit from the roles themselves, but from people being good, better, creating transformation, wherever they are.
It’s not about the role or the job, folks. It’s about the impact you have.