Stubbornness is very simple to identify, but hard to treat. Don’t keep wearing yourself out on rotten bow drill sticks that are never going to work. That’s called stubbornness. And possibly insanity, as many scholars credit Einstein with the quote, “The definition of insanity is doing the same thing over and over again, but expecting different results.” Instead, try something else instead of blindly continuing on a path that’s not working out. Tenacity is displayed when you stay in the fight until you win. Stubbornness is displayed when you blindly continue something, even when it’s not working.