Fashion designer Alber Elbaz once said: “When there is a wind of change, we can build a wall to protect ourselves from the storm or we can build a windmill… so we can benefit from the wind and be part of the change.” Work life balance has long been viewed as a women’s issue. But what would happen if diversity increased? How would it benefit both men and women?

Some (feminine) personality traits and behaviours are culturally off-limits for men (and likewise, masculine traits and behaviours for women),...