学問

油断するな

yudan suru na / ゆだんするなDo not let your guard down

Also written as: 油断すな

Meaning

The better things are going, the less you should relax. Where okotaru na (Do not slack off) asks you to keep going, this phrase warns against overconfidence and careless slips.

What to do today

Pick one problem you think you have solved and check it once more.

A word from the capybara

On the days things go well, watch out for small pebbles underfoot.