I finished the third draft for a new composition this afternoon on computer - a revision of my second pencil draft. It's sometimes surprising how much things change from one draft to another and I'm now anticipating a fourth, hopefully better draft.
And I had to put other projects on hold to make progress on this one. Focus has ways been difficult for me, but when I near the completion of a project focus becomes a little easier. As I grow older I'm learning to accept drifts in focus, something that has taken about 40 years of composing to arrive at and something that I'm beginning to accept perhaps as part of the creative process.