Take the comments here with a grain of salt. There's a lot of bad advice, even of the medical excuse kind.
One thing that jumps out to me is, if you can't finish why not scope it in a way you can?
Focus on making it so simple and break it down into steps so clear that you can accomplish it in one or two weekends. If you can't, make the scope and project even simpler the next time.
Once you get into the mode of simplifying the problem and the iteration, completing things becomes easier.
Don't auto diagnose anything. If you think there's a real problem go see a professional.
One thing that jumps out to me is, if you can't finish why not scope it in a way you can?
Focus on making it so simple and break it down into steps so clear that you can accomplish it in one or two weekends. If you can't, make the scope and project even simpler the next time.
Once you get into the mode of simplifying the problem and the iteration, completing things becomes easier.
Don't auto diagnose anything. If you think there's a real problem go see a professional.