Every time you’re sure you’ve completely blown it—write it down in your Catastrophe Journal. What you’ll find is that two things happen: You will realize over time that your predictions of doom don’t occur, and as soon as you begin writing down the details, the cycle we employ of making the details worse and worse over time will slow and stop. A month of persistence is usually all you need to begin to break the habit. It’s not really a catastrophe. It simply feels that way.