We are all role models to someone in this world, and we can all have an impact - for good.
You can have an impact anywhere you are.
But I know I have a son who doesn't listen to anything I say and if he hears the same thing from someone else, sometimes it has a little more impact.
Your life has been intentionally designed by God to have a uniquely significant and eternal impact on the world around you.
Don't worry about your platform; focus on your impact.