I have hundreds of them. Really great little tunes and harmonies that never got completed - IBGP's - i.e. Incomplete But Great Potential. I'm not sure what the problem is. I loose interest in bringing the comp to complete production. In some cases I only have a start/middle. Or a piano melody and the base harmony.
I love creating these - but hate the full production part.
What do you do with your unfinished work? Discipline yourself to complete before you allow yourself to move to something else? Find a writing partner? Someone that isn't so great at coming up with solid melody/harmony, but loves the producing/arranging game and taking starter concept to complete composition. Any tricks or methodology you could pass on? I don't have timelines or commitments to push me. I just write as hobby.