At the beginning of the week, or end of the week prior, make a list of priority tasks that you need to complete by the end of the week. I group tasks by type – business admin, business marketing, client work and personal and then get to work crossing things off my list. The key for me is that while my weekly list might be long, my daily lists starts with only 3-5 items on it. It is all about prioritization and once I tackle those most important tasks, I can address less pressing issues/tasks.
Always be sure to consider whether there are other people or tasks that depend on whether you get your part done and work on those first.
To stay motivated, I celebrate the completion of each task by crossing it off my list with gusto and a bright red pen.