luck, perseverance, and patience (the three keys to success)
A set phrase listing three traditional virtues for achieving a goal: 運 (luck), 根 (perseverance/steadfastness), and 鈍 (patience/dull persistence). Often used in self-help or motivational contexts.
It is said that the secret to success is luck, perseverance, and patience.
He lives by the motto of luck, perseverance, and patience.
鈍感 means 'insensitivity' or 'thick-skinned'; 鈍 in 運根鈍 suggests a positive, patient dullness.
A compound of 運 (luck), 根 (root/steadfastness), and 鈍 (dullness/patience). The exact origin is uncertain, but it is a traditional Japanese saying emphasizing the three virtues needed for success.