" Action Steps 1. Evaluate your progress regarding the tasks on your to-do list before offering to help other people. Note how much time you’ve allocated to each task and determine whether you have enough time left in the day to address them as planned. If you’re ahead of schedule, offer your help to the person asking for it. Otherwise, tactfully say “no” and explain your reason. Obviously, there’s nothing wrong with helping people. You should do so whenever you can. But you need to make sure you’re not jeopardizing the quality or timeliness of your own work in the process. 2. Remind yourself that few requests are truly emergencies. People seeking help usually want to receive it immediately. Their urgency rarely stems from a crisis. Rather, most people simply want whatever they seek sooner rather than later. It’s human nature. Before offering your help, determine whether a true crisis exists that warrants your swift attention. Again, most “emergencies” aren’t emergencies at all. 3. Ask whether you can help the person later. That allows you to say “no” and simultaneously appear willing to accommodate the individual. This approach also helps you to retain control of your time, a crucial part of working productively. People who hear this response will find it to be more palatable than a simple “no.” 4. Find out what you’re being asked to commit yourself to. When people ask for help, they often downplay the amount of time it will take. For example, consider the times you’ve heard someone ask you, “Got a second for a quick question?” Ask the person seeking your help to clearly describe what he or she wants you to do for them. If the tasks involved require more time than you have to offer, you’ll have a suitable reason to decline. 5. Decide in advance the activities you won’t help others with. Placing limits on the types of work you’re willing to address will make it easier to rebuff requests for help. For example, you might decide to shun making phone calls before 10:00 a.m. because you know such calls expose you to potential time sinks. A planned 3-minute call can easily turn into 20 minutes if the person you’ve called is chatty. If a coworker asks you to call a vendor or client for him or her, tactfully decline and explain your reason. "
― Damon Zahariades , The 30-Day Productivity Boost (Vol. 1): 30 Bad Habits That Are Sabotaging Your Time Management (And How To Fix Them!)