I have a severe case of this too. I always get caught up in the thrill of a new idea. I've been getting better at finishing things since I wrote all of my 'in

I have a severe case of this too. I always get caught up in the thrill of a new idea. I've been getting better at finishing things since I wrote all of my 'in progress' projects down and noted what stage they were at and what I need to do to move them on. I found that my projects got shelved once they needed outside help to continue. So in effect I had taken them to the limit of my own skills, which was more finished than I originally thought. Now I've got a list of where I'm at with them all and what extra resource they need to progress. So for example one project will be finished when I've got a spare $300 to put towards it. Another will be put into production if I find a manufacturer that meets a certain price and spec. Others are just beyond my technical level currently so I might release them as open source projects that people might make use of. Knowing what 'finished' looks like and what is needed next will remind you to keep contributing to the projects you've started.