
It was under the bodhi tree in India twenty-five centuries ago that Buddha achieved the insight that three states of mind were the source of all our unhappiness: wrong knowing, obsessive desire, and anger. All are difficult, but in one instant of anger—one of the most powerful emotions—lives can be ruined, and health and spiritual development can be destroyed. With exquisite simplicity, Buddhist monk and Vietnam refugee Thich Nhat Hanh gives tools and advice for transforming relationships, focusing energy, and rejuvenating those parts of ourselves that have been laid waste by anger. His extraordinary wisdom can transform your life and the lives of the people you love, and in the words of Thich Nhat Hanh, can give each reader the power to "change everything."
https://www.amazon.com/Anger-Cooling-Thich-Nhat-Hanh/dp/1573...
Also, check your blood pressure regularly every morning and evening, for a few weeks. You could be non-symptomatically hypertensive (for all sorts of reasons); talk to your doctor if you find your blood pressure consistently on the higher side.
Book #1 (Recommended by someone here on HN!) The Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth by Don Richard Riso and Russ Hudson
Book #2 Anger: Wisdom for Cooling the Flames by Thich Nhat Hanh