Just don't write Hahaha. For my experience, I have too many ideas about stories but I can't make them complete when I started to write.
If you want to make your stories complete, be sure you have to brainstorm the whole plot and know it from the beginning till the end.
Somehow, you can combine all ideas you have into one story if you can't pick up one. For example, today you start writing about the doctor love life.. but tomorrow you pop up another scene or idea about idol love life, plus make another setting in the story by putting new characters in your story like making that idol love life plot for the main characters' friend. Thus, your story is getting interesting.
Don't try to make drama in your story becauses it makes you feel bored to continue and come up another ideas again. Plus, try to write good imagination that you want for yourself in that. Lol

Just my own opinions, not professional statement

I would suggest you write your ideas down in one place before you choose the one you've plot planned inside of your head and write it. I've been in this situation where I want to write all of my idea but it won't be such a good idea to do