Living in the present

One day I worked in the operate room, a doctor came out and explained the illness with patient's family. According to explain by the doctor that patient should be very young. The operation is not successful; the patient's tumor has been large enough to affect the heart function. Then family members have been crying. Of course, when we heart the new are also quite sad. I think life is so short. What will happen the next moment we just don’t know? The most important is living in the moment, to seize every minute.