Read Errors in Social Judgement by Robert J. Robinson: https://store.hbr.org/product/errors-in-social-judgment-implications-for-negotiation-and-conflict-resolution-part-2/897104
Read Difficult Conversations by Douglas Stone, Bruce Patton, and Sheila Heen: https://www.amazon.com/Difficult-Conversations-Discuss-What-Matters/dp/0143118447
Read 7 Tips for Difficult Conversations in Harvard Business Review: https://hbr.org/2009/03/7-tips-for-difficult-conversat
Learn more about Prof. Robert Wilkinson: https://www.hks.harvard.edu/faculty/robert-wilkinson