It's the most helpful DBT tool I've learned yet because I often make very quick decisions which I would later regret. A little simplified explanation/example
take note of your emotions during a situation- I feel anxious and suspicious
take note of the reality of the situation- my boyfriend is at work the tracker says so and he called me on break from the work phone
Make a decision based on wise mind -
I'll trust him and finish my art project instead of interrogating him or worrying all night.
I believe it's the second part of mindfulness section of DBT. I have the DBT workbook by Matthew McKay, Jeffrey Wood and Jeffrey Brantley. I definitely encourage looking into Wise Mind