Good shadow work journal prompts are any that make you squirm and cringe - they may be difficult to work through, but you can bet they're also very effective at accomplishing their purpose.
To get the most value from your shadow work prompts, you'll have to challenge yourself and existing negative beliefs. Note you may or may not consciously recognise them as being negative, so approach the exercise with an open mind.
Each of those below are designed for exactly this purpose, with the eventual goal of helping you on your personal growth journey and healing process. Read more.