We have discussed here before the whole problem of writer's block. Some writers just put it down to a lack of discipline; others can only get the words flowing when they are 'in the zone'.
In my ten years producing Bible-teaching resources for CYFA (Church Youth Fellowships' Association) and four years as a part-time freelance writer, I had precious few days when the words didn't flow. I think the sheer joy I felt at finally doing a job where I could sit quietly and write was a great motivator. But it is also true that in both those periods of my life I had other jobs - at CYFA I was a trainer as well as editor and when freelance writing I was a minister at a local church four days a week as well.
Having other occupations for my time gave me a wealth of situations and characters to write about. Not that that sentence convinces.
Why do we restrict the 'blocked' idea to writers? I don't have very much writing to do at the moment. But I do have a number of things I really need to get on with and I'm finding it tough.
I think it might be one of those times where living in the introvert/extrovert borderland leaves me running out of ideas when I spend too much time internally.
This seems to be true because in a couple of sessions with small groups of people yesterday evening I was really extrovert - fired and strengthened by the presence of others in the room.
The best advice I can offer to anyone blocked by a particular task, writing or otherwise, is to spend some time doing something completely unrelated and trying not to think about the blocked thing. It often helps.