The whole "positive thinking" thing can come across as a bit New Age-y, which in my mind made it unlikely to speak to a majority of the workers feeling negative about their work. It's not easy to make a movement based on thoughts creating reality universally accessible. (Although avoiding the word "movement" probably helps.)
And so I tried to focus on what seemed to me the more concrete aspects of the practice -- avoiding thoughts that make us feel bad, reaching out to people who might be in the same boat, doing things that make us feel good about ourselves and others.
But there is no doubt a spiritual component to be found. My research revealed science on the topic, as well, and, to my surprise, a fair number of experts who believe "positive thinking" to be a destructive approach to improving our lives. But that's for another day. For now, I think it's safe to say that assuming the best and being nice to the people we work with isn't going to hurt.
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