No rest is worth anything except the rest that is earned.
What's the meaning of this sentence?
Here is my explanation: You shouldn't stop working or studying unless you are good enough.
p.s.: "unless"= if not
That is—— You shouldn't stop working or studying if you are not good enough.

Is it right?

Question

No rest is worth anything except the rest that is earned.
What's the meaning of this sentence?
Here is my explanation: You shouldn't stop working or studying unless you are good enough.
p.s.: "unless"= if not
That is—— You shouldn't stop working or studying if you are not good enough.

Is it right?

Answer

That's one answer:-)
For me it means something like, after you've worked so hard it feels so much better to take a break.  But if you haven't worked hard you will feel bad, even if you have all the time in the world.