Literature Reference: 驽铅虽自勉，仓廪素非实。—— 《登郡城南楼》张九龄 Though I strive with diligence, my storehouse remains empty. Source from 'Deng Jun Cheng Nan Lou' by Zhang Jiuling.
自: Nature; the true self.
勉:
Encouragement and diligence, symbolizing earnestness in work, lead to the accomplishment of great deeds.
Meaning: Self-encouragement signifies persistent effort and continuous self-improvement.