“But over the last decade, neuroscientists have discovered that, like an eager student, the brain is remarkably responsive to experience. Ask your brain to do math every day, and it gets better at math. Ask your brain to worry, and it gets better at worrying. Ask your brain to concentrate, and it gets better at concentrating. Not only does your brain find these things easier, but it actually remodels itself based on what you ask it to do.”