Matthew Poole and continuators on Proverbs 18:14

14 The spirit of a man will sustain his infirmity , but a wounded spirit who can bear ?

i. e. The soul, to wit, which is unwounded, as appears by the opposite branch of the verse, which is vigorous and chearful, supported by the sense of Gods Love, and the Conscience of its own Integrity, and the prospect of its present Peace, and future Happiness.

Will easily support him under any bodily or outward troubles, as Gods people have oft found by experience.

Dejected with the sense of its own guilt and misery.

It is most grievous and intollerable without divine assistance.