I love this life hack from Tara at Science in the City. Her strategy for maintaining a work-life balance is to remove your work email from your personal devices.
Check out other ideas about work-life balance here and here.
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Teacher Life Hacks
That is a great idea! I luckily do NOT have my work email on any of my devices! I hated when I had a board issued BlackBerry, it would go off at all hours. It was AWESOME to give it back when I returned to the classroom!