At various instances in this podcast, I mentioned, "breathe". My rationale was that paying attention to your breath connects you directly to your senses, allowing your thoughts to live their own life, accepting that thoughts are not entities, recognising that they captured your attention away from your breath and patiently reconnecting to the sensation of your breath, again and again, a thousand times. In this manner you develop a new relationship with your thoughts, you let them be, you acknowledge rumination without reacting, you are not intimidated by your thoughts, no matter how rebarbative they might be. In the fourth part, I spent time establishing that thoughts are incidental to the evolution of interneurons that build predictive mental models.