Yup, that's true that finishing a project is more than programming skills. You would have to do a lot of boring work on the way. For me, the last 10% of the work which contains more polishing to what you have built so far and making it ready is the hardest part.

But somehow I have successfully done that for my project https://github.com/joyread/server when I launched v1.0 and it is indeed rewarding.