Sirach 38:18

18 For of heaviness cometh death, and the heaviness of the heart breaketh strength.

Sirach 38:18 In-Context

16 My son, let tears fall down over the dead, and begin to lament, as if thou hadst suffered great harm thyself; and then cover his body according to the custom, and neglect not his burial.
17 Weep bitterly, and make great moan, and use lamentation, as he is worthy, and that a day or two, lest thou be evil spoken of: and then comfort thyself for thy heaviness.
18 For of heaviness cometh death, and the heaviness of the heart breaketh strength.
19 In affliction also sorrow remaineth: and the life of the poor is the curse of the heart.
20 Take no heaviness to heart: drive it away, and member the last end.

The Brenton translation of the Septuagint is in the public domain.