As a software development manager, I had to learn to go home early. I'm the type that enjoys work. I would work late till 8-9pm. My team would feel guilty and stay till 7-7:30pm. When I noticed this, I started leaving early 5-6. I would get in my car making a phone call and in 5 minutes, I would see everyone leaving. All I ask for everyone is 8 STRONG hrs everyday.