I've felt the same way for most of my adult life in regards to programming. I love the thought and idea of creating a handful of software applications and have even thoroughly documented some of them and maintained them over the past decade, but once I think out all the features I'd like for something to have I lose interest before ever writing the first line of code.
Over the years when I look back and reflect I've come to realize that I'm just a daydreamer and the moment I fulfill my daydream/fantasy I quickly lose interest in whatever that something was. I've also realized that I like quick development type projects that don't require years of my time and focus. This is why I've always loved web development since the early 2000's because you start from nothing and can quickly develop something to completion relatively quickly before you have enough time to lose that focus.
Just about all of my web projects are basic CRUD type projects and the rest are just localhost type stuff that I did or do to try and keep my interest and stay up-to-date on my skills and programming language changes.
The only project that is public as of right now is my from scratch textboard which has kinda fell by the wayside. It can be found at: http://www.PRTF.net/. I soon will retire this project for something smaller that I'm currently developing but due to my family duties and job responsibilities I don't have much free time to keep at the development.
I have the same issue.