Entrepreneurs are so passionate about what they are creating — and often, so fearful of letting their team and investors down — they will do almost anything to realize their startup’s potential. Stories of entrepreneurs forgoing sleep, friendships, family relationships, exercise, and good nutrition for their startups are the norm in today’s culture. This approach however can lead to chronic stress, which wreaks havoc on entrepreneurs’ physical and mental health. This HBR article tells you how to address this problem.