There's much to be said for feeling numb. Time passes more quickly. You eat less and because numbness encourages laziness you do fewer things good or bad and the world's probably a better place for it.
Realize that if you have time to whine and complain about something then you have the time to do something about it.
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By recollecting the pleasures I have had formerly I renew them I enjoy them a second time while I laugh at the remembrance of troubles now past and which I no longer feel.