Be willing to change your beliefs. So many people only accept new facts if they are in alignment with their beliefs. But if they go against what they believe, they throw out the facts rather than change their beliefs.
The only real sane way to do it is to change your beliefs, in light of the new information.
Start noticing where you say things like:
I cannot believe that
I won’t believe that
That is not possible
Then change your beliefs to fit what is not jiving with your beliefs.