Speak up when your workload is too much. Tell your boss if you are stretched too thin or when you regularly work too many hours. Talk about what you can reasonably get done in a week.
Also, don't say yes to everything. If you have a hard time saying no, don't respond immediately. Instead say, "Let me get back to you", or, "Let me think about that."
"A good laugh and a long sleep are the best cures in the doctor’s book."
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