Here is the link to the video that is mentioned.
The 90 second rule and then it's gone. It's predictable circuitry, so by paying attention to what circuits you are triggering and what that feels like inside of your body, you can recognize when it has happened. We all know what it feels like when we suddenly move into fear. Something happens in the external world and all of a sudden we experience a physiological response by our body that our mind would define as fear. So in my brain some circuit is saying something isn't safe and I need to go on full alert, those chemicals flush through my body to put my body on full alert, and for that to totally flush out of my body, it takes less than 90 seconds.
So, whether it's my fear circuitry or my anger circuitry or even my joy circuitry - it's really hard to hold a good belly laugh for more than 90 seconds naturally. The 90 second rule is totally empowering. That means for 90 seconds, I can watch this happen, I can feel this happen and I can watch it go away. After that, if I continue to feel that fear or feel that anger, I need to look at the thoughts I'm thinking that are re-stimulating that circuitry that is resulting in me having this physiology over and over again.
When you stay stuck in an emotional response,you're choosing it by choosing to continue thinking the same thoughts that retrigger it. We have this incredible ability in our minds to replay but as soon as you replay, you're not here, you're not in the present moment. You're still back in something else and if you continue to replay the exact same line and loop, then you have a predictable result. You can continue to make yourself mad all day and the more you obsess over whatever it is, the more you run that loop, then the more that loop gets energy of it's own to manifest itself with minimal amounts of thought, so it will then start on automatic. And it keeps reminding you, "Oh yeah, I was mad, I have to rethink that thought."