Rinse and Repeat

If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism.  
If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism. 
If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism.  
If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism.  
If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism.  
If pessimism doesn't work, try optimism. If optimism doesn't work, try pessimism.

Shampoo for Cynics
(Optimistic Conditioner?)