Thinking for yourself

Who can say they think for themseves 100 %?
I rely on astronomers to tell me that I live on a planet in a solar system. I trust them when they say there is a planet called Pluto. They show me photos. The media and science teachers pass on that information. I trusted that everything my teachers taught me at school was true.
I trust Catholic theologians but of course I have to be careful as their political bias may come in to play.
We choose who we trust. Am i as smart as Nietzche Jung Dosteovsky or Jordan Peterson?
No. But much of what they say except maybe Nieztche strikes a chord. They appear rational. Not too radical views. Interesting perspectives which stimulate my imagination.
Other people respect them. No one i know who I respect has trashed their views. It looks like Peterson will go down in History as an incredibly insightful prophet. In some ways he brings all my interests together and articulates what I kind of suspected all along. We need to keep the radical left in check. They have dangerous ideas. Nihilism and Atheism are not the answer.