Gnaw (at) (someone's) vitals idiom verb phrase
To cause tremendous agony or misery in someone.
Witnessing the misery of many people around his town gnawed at his vitals day after day, the Happy Prince decided to help them by giving away all of his precious things on his body to them.
Her mother's death has been gnawing at her vitals for many days.
This idiom is often used to express that you should accept an unpleasant situation or event because you cannot change it.
When you experience extreme and undesirable situations, it is probably essential to take extreme actions
The verb "gnaw" should be conjugated according to its tense.