Don’t make the mistake of saying God placed a curse on man when he sinned, by making his work difficult. (Thorns and thistles, sweat on the brow). He gave man work to do as a blessing before Adam sinned.

“And God blessed them. And God said to them; ‘Be fruitful and multiply, and fill the earth and subdue it, and have dominion over the fish of the sea and over the birds of the heavens and over every living thing that moves on the earth.’”
Genesis 1:28ESV