" Negative visualization, in other words, teaches us to embrace whatever life we happen to be living and to extract every bit of delight we can from it. But it simultaneously teaches us to prepare ourselves for changes that will deprive us of the things that delight us. It teaches us, in other words, to enjoy what we have without clinging to it. "

― William B. Irvine , A Guide to the Good Life: The Ancient Art of Stoic Joy