Hey Stu,
For me, whenever I'm so focused on the result of a certain desire, I tend to freeze up. The second that I let go and just do the desire for what it is and not worry about the result, things just flow.
For example, I've written a couple of articles about self development. When I first started, it took me forever to write an article because I was worried about what people would think of my writing style, word choice, etc.
So I switched my focus from the result of the action to the action itself. I then just starting writing to myself. I didn't care if I made mistakes in my writing, I just wrote. I wrote as if I were writing in my journal and I was the only one going to read it. Later, I would go back and edit it. But overall this was a much faster process and, ironically, not focusing on the result gave me better results.
Nick Pagan talks about this a lot.
Here's an article that mentions this idea. I'm sure he has others but I can't find them at the moment.