There's a Tibetan tale about a jealous beggar who passes his days just outside the palace wall, muttering, “Why does he  get to be the king and enjoy all those luxuries? Someone should cut his head off and make me king!” One day, exhausted by rage, the beggar falls asleep on the ground, and as the king's chariot passes through the gate it rolls over him and cuts off his head. 

Without necessarily believing in such literal karmic retribution, we can see the tale's psychological accuracy: our resentment of others fails to transfer even a shred of their happiness to us, but succeeds in choking our minds with negativity.

- Dean Sluyter