expression
preparation prevents worry; if you are prepared, you have nothing to fear
Proverb emphasizing that thorough preparation eliminates anxiety about future difficulties.
非常食を用意しておけば、災害時も備えあれば憂えなしだ。
If you stock emergency food, you'll have nothing to worry about in a disaster.
試験前にしっかり勉強しておけば、備えあれば憂えなしで落ち着いて受けられる。
If you study thoroughly before the exam, you can take it calmly, knowing that preparation prevents worry.
A classical Japanese proverb combining the nominalized forms of 備える (prepare) and 憂える (worry) with the conditional あれば and negative なし. The exact origin is uncertain, but it reflects a common cultural value of preparedness.