Seconding this. The Scout Mindset is the best book I've read this year. Life changing. Note that it's more aimed at helping you recognized (and defeat) your own biases than help you with other people's biases. I think it will help with extending empathy to them, though, recognizing the mechanisms through which they appear "stupid".
I had this in my "eventually" pile (worthwhile but not immediately compelling), until I read this review by Scott Alexander: https://astralcodexten.substack.com/p/book-review-the-scout-...
We're actually making it required reading at my workplace.