I read an article recently suggesting top-performers in the army tend to be happy. https://sloanreview.mit.edu/article/top-performers-have-a-superpower-happine

I read an article recently suggesting top-performers in the army tend to be happy. https://sloanreview.mit.edu/article/top-performers-have-a-superpower-happiness/ https://sloanreview.mit.edu/article/top-performers-have-a-su... While balance isn't required for happiness, I know many imbalanced, unhappy and underachieving people.