Making lists to structure your writing ideas for a novel, short stories, non-fiction work, blogs posts, anything is great to organize all your thoughts.

I keep a note in my Notes app in which I type out all ideas I have. They can be concrete story ideas, lists of subjects I want to write about, morals, pieces of dialogue or sentences that pop up in my mind. 

Write down what inspires you. Choose topics that you’re excited about, that (literally) keep you up at night. Topics you want to teach your (future) children about. Soon you’ll find you get ideas from everything. From a situation you encountered at the grocery store, to a newspaper article, to a great film.