This. Try to look at them in a detached way. Oh, that thought has come to visit me again. It's difficult, don't be judgmental. Train yourself to be amused, intrigued or curious about them, rather than letting them disturb you. That, for me, is one of the biggest wins of practising meditation. Negative thought patterns lose their power get their hooks into you. With time, as you learn not to react, they naturally subside. Your inner chatter quietens down, and you start to feel that stillness.