Mita Mallick shares five key insights from her new book, The Devil Emails at Midnight: What Good Leaders Can Learn From Bad Bosses.

Mallick is a corporate changemaker who, with an extensive career as a marketing and human resources executive, has advised Fortune 500 companies and startups alike. She is a LinkedIn Top Voice and was named to the 2025 Thinkers50 Radar list. She is a contributor to Harvard Business Review, Fast Company, Adweek, and Entrepreneur.

What’s the big idea?

The silver lining that comes from working for several bad bosses? You can learn what not to do as a leader. From every bad boss comes a valuable lesson about how to manage teams and contribute to a company’s success.

1. Stop normalizing emailing at midnight.

I was so excited to meet my new boss. Apparently, th

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