"I am hot-tempered." "I am an introvert." "I cannot speak in public." What if none of that is innate — just grooves you drove into once and stayed in?

Options

• Come on — temperament and wiring are real
• Freeing. It means it is old software, not a life sentence
• True and brutal. Rebuilding those grooves takes years
• That is neuroplasticity. The brain does change under repeated action