Get out of the office
Sometimes, when you have a pile of work to do, and you just can't find the time to do it, it means you need to get out of the office. The office comes with distractions: people stopping by with questions, noise from across the hall, email, IM, and phone calls. Getting out of the office might mean working from home, working at the coffee shop down the street, or even just book a conference room and working in there. To make the time most effective, give yourself specific goals for the time you block off. What are you hoping to finish during that time you're away. While you're away, turn off the phone, close IM, and don't check email. Get done what you need to get done.