I don't know. Over the years I have found myself torn between wanting to focus on one thing and get progress and wanting to allow my creativity to run free and jump from project to project.
For many years I reigned in my interests and focused on some work related project. I now have a job that doesn't leave me stressed and tired at the end of the day. Creativity is running amok!
I think for a change that I'm going to embrace the wild ideas and work on them each a little bit from time to time as I'm interested. Honestly, my productivity is amazing when I'm tuned into something, so from time to time each project should get a spurt of progress.
Perhaps in total this will make me a more productive and more importantly a happier person as I spend more time doing things I'm very interested in doing.