'What stands out to you?' is one of My 12 favorite questions. I typically ask it multiple times a day. I use this question at the end of most of my therapy sessions. Asking powerful questions has developed into one of my superpowers, and can be learned by anyone.
To end a counseling session, I ask "What stands out to you from our time today?". I have found this question helps my clients pause and reflect on a summarizing thought, emotion, or experience. It can lead to profoundly insightful answers.
This is also a helpful way for me to not assume what is most meaningful to the client. It can become a good barometer for the experience the client is having in session.
Asking open-ended questions like this is a powerful way to stir insight and help people put their experiences into words.