Food for thought!!!!!!!!

Guruji told a joke.People laughed hysterically over it.He repeated the joke.Few less people laughed.He again repeated same joke.This time number of people laughing & quality of laughter reduced further.He then repeated joke some 2-3 more times.Each time,it had lesser people laughing & ultimately, it stopped. Guruji said, "When you cannot laugh over same joke many times, why do you cry over same thing over & over again?!"