I have this same problem often - maybe not even six months. I have several techniques that seem to work to combat this well 1. When you do have the enthusiasm

I have this same problem often - maybe not even six months. I have several techniques that seem to work to combat this well 1. When you do have the enthusiasm for the project try to do the "dull" or "chore" work first. That way the fun and exciting bit will keep you going for longer - they lose their motivational benefits once they are done after all. 2. Make sure you can come back to the project and work on it later - this way taking a two week break won't be fatal, and it is necessary to take breaks to refresh your enthusiasm for the project and avoid burnout. Some of this is design, some is management and some of it is attitude. 3. Make promises to other people. I find it so much easier to finish something that I told someone I would finish for them, than something I want to make for myself. Be careful not to promise too much though... 4. Learn how to force yourself to do work. I find when I start doing even a small piece of work on a project, a good proportion of the time the rest of the project will "draw me in" and I end up doing more than I intended. Hope it helps. :)