“ When anything pleasant occurs it should be enjoyed to the fun, without stopping to think that it is not so pleasant as something else that may possibly be happening to someone else. ”
 Bertrand Russell, The Conquest of Happiness (1930). copy citation

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“I cannot find happiness while I continue to feel envy, and you tell me that I cannot cease to be envious until I find happiness.’ But real life is never so logical as this. Merely to realise the causes of one’s own envious feelings is to take a long step towards curing them. The habit of thinking in terms of comparisons is a fatal one. When anything pleasant occurs it should be enjoyed to the fun, without stopping to think that it is not so pleasant as something else that may possibly be happening to someone else. ‘Yes,’ says the envious man, ‘this is a sunny day, and it is springtime, and the birds are singing, and the flowers are in bloom, but I understand that the springtime in Sicily is a thousand times more beautiful, that the birds sing more exquisitely in the groves of Helicon, and that the rose of Sharon is more lovely than any in my garden.’ And as he thinks these thoughts the sun is dimmed, and the birds’ song becomes a meaningless twitter, and the flowers seem not worth a moment’s regard.” source