Walgreens' HR chief says leaders need to 'take the wall down' and be open about themselves at work

• Holly May is global chief human resources officer at Walgreens Boots Alliance.
• May told Insider that being open about the challenges you're facing can make you a better leader.
• Leaders need to "take the wall down" so those under them can say what they need to perform best.

Holly May believes opening up about who you are and the challenges you're facing outside the office can make you a better leader.