אַל תֵּאָמֵן בְּעַצְמְךָ עַד יוֹם מוֹתְךָ

ביטוי (אנגלית)

Trust not in yourself until the day of your death

הגדרה (אנגלית)

Never be excessively self-confident. A proverb warning against a person's excessive confidence in his own abilities and powers.

("Hillel says: Do not separate yourself from the community and do not trust in yourself until the day of your death, and do not judge your fellow until you reach his place" – Avot 2:4)