I do the same thing when I'm making jewelry. I have a piece I need to finish, and then I see something out the corner of my eye grab it and then start a new piece of jewelry, while planning how I could create a new collection.
I know this is sometimes referred to a multitasking, but more likely in my case it's procrastination. I am working on this and have found that if I create a plan and set time limits that I do better at getting things done.
Do you find yourself working on several things at the same time? Do you consider it multitasking or procrastination?