Prof Ilchi Lee writes in his book that Neuroscientists say that our personal experience of emotion is based entirely on changes in the body. An accelerated heart rate when we feel fear, or the facial muscle changes associated with a genuine smile are examples. I dispute that contention.
Try an experiment for ten days. The next time you find yourself experiencing a really distinctive emotion (joy, anger, or sadness), focus for a second on your brain. Do not be surprised if it feels, in a physical sense, something that very closely correlates to your emotions. Keep a record of your findings in a small notebook.
For instance, if we are experiencing joy. our brain may feel light. If we are experiencing anger, our brain may feel hot. If we are experiencing sadness, our brain may feel heavy. And you may begin to spot other bodily signals, such as heartbeat, body temperature, and perspiration, physical signals of the emotional content of your next moment. As you become comfortable with this process, you can choose to change that moment.
If you can learn to change a moment, you can learn to change your life! It is not that difficult to achieve.