My tip is to try something new. Just try creating a new character, fleshing them out and writing their little backstory. It may inspire you with your other stories. Also, a favourite writer of mine says that for every one of your characters you should write their backstory, even if you never use it or show it to people and when I have writers block, I do that :) I alos enjoy watching music videos because sometimes the ones that tell stories give me little idea :)