I have many many recommendations. Here are a few of what I've experienced and practiced:

https://www.neuroleadership.com/education/bbc/brain-based-co... Training -- Brain-Based Conversation Skills

http://www.quietleadership.com/index Book -- Quiet Leadership

http://www.centerforappreciativeinquiry.net/ Training -- Appreciative Inquiry

http://www.amazon.com/Appreciative-Inquiry-Positive-Revoluti... Book -- Appreciative Inquiry: A Positive Revolution in Change

http://aliainstitute.org/ Authentic Leadership in Action Institute (Buddhist foundation)

http://shambhala.org/ The path of meditation focused on creating "enlightened society." Starts with where most of the issue is: your own mind.