To mourn deeply and grieve intensely for a loved one, but not to the extent of harming one's health or endangering one's own life.
他虽然为失去亲人而悲痛欲绝，但也深知要遵从毁不灭性的古训，好好生活下去。
Although he was deeply grieved by the loss of his loved one, he understood the ancient wisdom of not destroying one's own life through sorrow, and resolved to live on.
Next Idiom