Maintain this list in a place where you are sure to find it. Once you have listed your daily activities, determine whether it is urgent, important or trivial. Estimate how long each task will take. Don't underestimate, or you will throw off your entire day's schedule. Schedule your most difficult projects during that time of day when you are most energetic and alert.
Some people are early birds, and some are night owls.
Begin by tackling the most simple project and graduate to more complex ones. Take regular breaks, and when you begin to tire, turn to a less taxing project. Block out times when you will not allow yourself to be interrupted. Don't answer the phone or e-mail messages at that time. Be assertive with those who can't take a hint and interrupt you.