Finally, I get started and it goes great, the code is really elegant, I put a new programming technique/trick to use ...
That suggests your primary driver was to get to try something new. Once you've satisfied that urge, you move on to the next bite-sized learning experience that will give the same initial rush.
If you want to get into shipping mode, maybe you should try to explicitly force yourself out of "elegant experimentation" mode by doing things the "boring" way, whatever that may be for you.