Never mind your happiness do your duty- Peter DruckerHappiness Quotes ๐ Spread the love Never mind your happiness; do your duty. Peter Drucker Happiness Quotes Spread the love Explore Awesome ๐ Quotes By โ Peter DruckerRelated AuthorJohn Davison Rockefeller O. Henry Sri Sri Ravi Shankar Thomas Louis Magliozzi Zig ZiglarRelated TopicHappiness Mind Duty