I just finished reading Crucial Conversations: Tools for Talking When Stakes Are High by Kerry Patterson, Joseph Grenny, Ron McMillan, and Al Switzler. The book echoed a lot of good lessons from prior books on conversations I've read, but it did so in a very practical and structured manner with lots of examples, which I really liked.
It made me realize how many of our interactions on a regular basis have a "crucial" element and how often we go into silence or violence when we get emotional and try to persuade people. The book is very helpful in giving concrete signals to look for in yourself and other people to check whether you're really in dialogue and safe or whether the situation is getting too dangerous (and how to restore that). Of course, these skills are much easier to read and understand than to execute, but I found the book to be really helpful, and I hope to use it in the future to improve my own skills in this area.