You could try scheduling it in. Say, half an hour a day starting at 4:30 PM. Then afterwards you get to do something fun. Breaking it up into little pieces can make it feel less daunting, and not having to spend all day thinking about how you 'should' start a project can keep you from building it up in your mind.

If you can work up the motivation to get out the door, then it might also help to go to the library or something to work. I often work better in another location where I only do schoolwork. That way I don't have much to distract me. If you enjoy doing something outside, like taking a walk or biking, you could use this as incentive to get to your study place and back. Then once you're there, doing the work itself is a lot easier.