Diligence is the mother of good fortune.

Steady, careful work can help bring about favorable results. The proverb treats good fortune not simply as a lucky accident, but as something that effort can help create.

It encourages persistence by linking repeated effort with opportunity. It does not mean that hard work guarantees success or that every setback results from a lack of effort.

Use it to encourage someone to keep working carefully toward a goal, or to recognize the effort behind a favorable outcome. It fits situations where preparation and persistence can improve the chances of success.