I'm indebted to the guys at 99% again for some
stimulating thinking on getting creative things done. In particular I found the advice about focussing on one or two creative projects per week helpful, thinking in my mind 'Aha, Sunday's sermons!'. Blocking-out dedicated, uninterrupted time for such work seems eminently sensible. And focussing on process, not goals sounds helpful, too.
You might want to think of combining this advice with other reflections (previously mentioned
here), such as
"After focusing intently on a project or problem, the brain needs to fully disengage and relax in order for a “Eureka!” moment to arise."