“Peace of mind and physical well-being are closely related. Some years ago, a scientist at Emory University told me that continuous anger, fear and suspicion tend to eat into our immune system. Besides, peace of mind and warm-heartedness bring us confidence.”
His Holiness the 14th Dalai Lama
This is absolutely true. I nearly died in 1994 of all that.
A real challenge to cultivate in a world like this one!