'Struggles' in the Bible

All that my eyes desired, I did not deny them. I did not refuse myself any pleasure, for I took pleasure in all my struggles. This was my reward for all my struggles.

What does the worker gain from his struggles?

There is a person without a companion, without even a son or brother, and though there is no end to all his struggles, his eyes are still not content with riches. “So who am I struggling for,” he asks, “and depriving myself from good?” This too is futile and a miserable task.

This too is a sickening tragedy: exactly as he comes, so he will go. What does the one gain who struggles for the wind?

The struggles of fools weary them,for they don’t know how to go to the city.