Edmund Phelps

I just think that the Europeans are depriving themselves of a high-employment economy, and they are depriving themselves of intellectual stimulation in the workplace - and personal growth - by sticking to the stultifying, rigid system that I call corporatism.

I would absolutely recommend against excessive positivity and optimism. Any positive emotion that you're infusing into a workplace needs to be grounded in reality. If it's not realistic, sincere, meaningful, and individualized, it won't do much good.