And certain truths about the nature of our minds are well worth knowing. For instance, the anger you felt yesterday, or a year ago, isn’t here anymore, and if it arises in the next moment, based on your thinking about the past, it will quickly pass away when you are no longer thinking about it. This is a profoundly important truth about the mind — and it can be absolutely liberating to understand it deeply. If you do understand it deeply — that is, if you are able to pay clear attention to the arising and passing away of anger, rather than merely think about why you have every right to be angry — it becomes impossible to stay angry for more than a few moments at a time. Again, this is an objective claim about the character of subjective experience. And I invite our readers to test it in the laboratory of their own minds.
– Sam Harris, “Sam Harris’s Vanishing Self” on The Opinionator, The New York Times Blog