I always end up revisiting old projects. I think I need to let go of the imposter syndrome I always seem to develop. If I feel inadequate about my ability to focus and complete a project, and I really shouldn’t, then neither should you! I would never hold my friends to the judgemental standard to which I hold myself, so why should I apply it to myself? Furthermore, why should you?
Take the whip off. If it’s fun, and you enjoy doing it, and you /feel/ like doing it, then do it! Don’t worry if your project lays incomplete for a good long while, you likely learned something awesome just by completing whatever you did!