Wisdom there. The practice of focusing on controlling self, instead of trying to control others and circumstances, is the foundation. Along with faith and spiritual discernment, and being accountable to God and conscience above anything else.
Some related books are "Letting Go, The Pathway" by David Hawkins, and "How the Mind Can Heal Itself" by Roy Masters, and "The Imitation of Christ" attributed to Thomas a Kempis. Would like to hear any other suggestions too.