You might get backed into a corner by a boss or coworker today, but don't panic. When you panic, you start to make stupid decisions, and your tendency to exaggerate grows. So if someone asks for something you haven't done yet, don't run around like a chicken with its head cut off. Ask for the time you need and get things done correctly. The timetable you're being asked to adhere to might simply be unrealistic, and that's not your fault.