مَا حَكَّ جِلْدَكَ مِثْلُ ظُفْرِكَ
فَتَوَلَّ أَنْتَ جَمِيعَ أَمْرِكَ
Nothing scratches your skin like your own nail
So take charge of all your affairs yourself
المصدر · Source: Traditional Arab proverb. Majma' al-Amthal. Ed. al-Maydani