I find that when I have a bunch of hobby activities on my plate, I tend to get snowed and find that I can't do any of them. The Icar Fleet Setting for me became such a massive roadblock that I found I felt guilty doing anything that was RPG related that wasn't that.
I would set aside an evening, sit down to work on some graphics, get no-where in half an hour and then play a PC game or something. Next time I sit down, the weight of the failure and all the previous ones press down. I could just knock-out a review but then I'd not be progressing with Icar and that bugged me.
It's done now, out of the way. Now I can get on with other things!
Do you have any creativity roadblocks that make it difficult for you to work on anything? Do you get suckered into playing console/PC games when creativity things get bogged down? How do you get past the wall at 66% of project completion?