Start each day by ranking the things that you much do. Starting with the most important and unpleasant tasks first, then go from there. Those things that can wait for later that day should be listed towards the bottom of your list. Don't make your list too long because there are only so many hours in a day and you don't want to feel like you will never get it all accomplished.
Second thing is to Assign Work Time Frame for each task.
At first this might not seem realistic but it is mostly so that you will have some sort of idea how long it will take to finish each task. You will find that once you start a task, it won't really take very long unless it is a big project. If so, then break it down so that you can see some progress.