Sometimes, despite putting in a lot of effort and hard work, things may not turn out as expected due to various factors beyond your control. It's important to remember that setbacks are a natural part of life and can provide valuable learning experiences for future endeavors.
fatigue
Fatugue
by putting effort
Work ethic
If you don't put effort you might not get another chance
someone that do hard work and effort
The key factor that proves there is no substitute for hard work is the consistent effort and dedication put into achieving a goal or success.
it means you have tried really hard
Labour can be used as both a noun and a verb. As a noun, it refers to work, especially hard physical work. As a verb, it means to work hard or make great effort.
"Careful and persistent work or effort." Taken from OED.
"Hard-working" is an adjective. It describes someone who puts in a lot of effort and diligence towards their work or tasks.
Many slaves slowed down their work or refused to work at all.