I run into this often. I'll usually print or open my inspiration map in a separate window, and literally look at it the entire time I'm working. Still, sometimes it just does take inspiration to strike. If it's really making you frustrated, try working a project that doesn't matter to you (like a random island) using one of the tutorials you've never done before. I find that often gets me unstuck, because (a) I learn new tricks I can apply, or (b) not banging my head against the wall on the project I do care about gives my subconscious the breathing space it needs for that lightning flash of inspiration.