Despair is the greatest sorrow

I just made a sad decision. I completely give up any effort trying to change this situation. Six years is not a short time and I already tried my best except going down on my knees.

Here is the translation of 哀莫大於心死:
Etymology
Literally: Nothing is more lamentable than a dead heart.

Proverb
Despair is the greatest sorrow; Nothing gives greater cause for sorrow than despair; There is no grief so great as despair; There is no poverty like the poverty of spirit.