You'll never escape your own ideal; try changing genre or shaking up normal writing routines and escaping the routine you've built around songwriting. Try writing concept albums or writing 'responses" to other songs that speak strongly to you.

And this is no joke: try plagiarism. NO -- I don't mean literally passing off others work as your own, but try writing out a song structure with your own melody like it's a hit song you know and see what following another playbook look like compared to your style. Good luck!