6 Establish parameters for saying "No."

We all know people who make their time limits very clear: "Not my job," they say. "It's five o'clock and I'm out of here." And some of us have reason to envy them. Almost everyone ends up working late or bringing work home once in a while, but if you find yourself doing it more and more often, it may be time to start saying no-and not only to others but also to yourself. Working longer and longer hours (whether for extra pay or not) upsets the balance between work and leisure that is essential to your health and well-being. Just as serious is the negative effect it can have on your reputation.