I have a system from my garment making days that I now apply to quilting. I can't walk away until I have made whatever fix is required. Then I know when I pick it up again I will be able to move forward, not back. Also if I have a project that is not giving me the warm and fuzzies I allow myself to start another one....but every day I have to work on the downer project for a while before I work on the happy project. In this case my goal will be to complete two blocks every day before I allow myself to move on to something else. That way it won't be residing in a plastic bag for the next 10 years!