"Je zbytečné se příliš snažit."

Translation: It is useless to try too hard.

[dsarkarati]

How does "příliš" mean "too hard" instead of "too much"?

[kacenka9]

"too much" is also an accepted translation but it is more common in English to use "too hard" here

[tylerskarz]

'zbytek' means 'rest, remainder'. I expected 'zbytečný' to mean 'remaining' but it means 'useless'. Is there a relationship?

[VladaFu]

Remaining can be zbytný and as an archaism even zbytečný.

Yes, there is a relationship, I think the etymology should be quite clear, something not needed, something that remained unused...

[tylerskarz]

Makes sense. Thank you.