For what Harley Street specialist has time to understand the body, let alone the mind or both in combination, when he is a slave to thirteen thousand a year?
In our daily life a certain way of thinking makes us happy, and a certain way of thinking makes us unhappy. In other words, there are certain states of mind which bring us problems, and they can be removed.
Memento mori - remember death! These are important words. If we kept in mind that we will soon inevitably die, our lives would be completely different. If a person knows that he will die in a half hour, he certainly will not bother doing trivial, stupid, or, especially, bad things during this half hour. Perhaps you have half a century before you die-what makes this any different from a half hour?