If you want to go down some epistemological rabbit holes, google “proving a negative.”
In the meantime, let’s briefly engage in some logic, shall we?. Ready, here goes…
We can’t absolutely prove that positive thinking works.
Okay. Maybe so.
But there’s a ton of proof that negative thinking does. Countless research studies including this latest one show the destructive power of our negative thoughts.
We might as well think positively, right? What have we got to lose?