It got like that in my last job and I was self-employed. The negativity bad attitude of the people I was providing a service for ground me down so much I ended having suffering from depression. I didn't realise at the time it was work causing it but once I realised I quit what I was doing and started working elsewhere and things took aturn for the better. I still have my ups and downs but on the whole life is alot better.

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What is life?
If not an excuse for death,
and what is death,
if not an escape from life?