Do not have email on your phone. Do not glance at it when you get a free moment in the elevator or in a boring meeting. Do not answer random emails throughout the day. Instead: set a time to do email and stick to it. I have the luxury of doing email only once a week. Every Monday morning at ten o’clock, I open my inbox and don’t stop until I’m down to zero. For the rest of the week, I have an auto reply that basically says, I’ll get back to you on Monday.