Because career success depends so heavily on happiness and attitude, you need to treat these factors differently, and not just as two more parts of an overall risk-mitigation model.

FORBES: For Career Decisions: Maximize Risks Instead of Managing Them

The relationship between friendship and happiness is a constant theme in the book, so I was eager to here more about her views on hapipness.

FORBES: Do One Thing at a Time

So my sense of seasonal happiness on Christmas Eve intensifies as the King's College Choir and congregation reach the final verse of Once in Royal David's City.

BBC: A Point of View: The joy of Christmas carols