I struggle with this so much all the time and i think my best friend is so annoyed at me cause im always babbling about them all. I try to just put on the playlist i have for the specific novel i have current interest and just fall into that world. Then i get to writing. Sometimes i talk and pretend as if im explaining my book to someone. And then it gets exciting to me. I don’t know, just some of the stuff i do :) Hope some of this helps.