The goal of a thinker is not to just come up with new thoughts, we must mostly polish the old thoughts and see if they still shine in the same way as they were first introduced. We are retelling stories to see if they still are valid.
Don't worry about having new thoughts, focus on what has come before you and what is around you. If you have something new, it will come out of this state naturally.
And polishing the old thoughts is just as valuable. The scientists who confirm the theory are just as important as the theorists. We are all building together.