Bhagavad Gita 18.41
ब्राह्मणक्षत्रियविशां शूद्राणां च परन्तप । कर्माणि प्रविभक्तानि स्वभावप्रभवैर्गुणैः ॥
brāhmaṇa-kṣatriya-viśāṃ śūdrāṇāṃ ca paran-tapa / karmāṇi pravibhaktāni svabhāva-prabhavair guṇaiḥ
Translation
The works of brahmanas, kshatriyas, vaishyas, and shudras, scorcher of foes, are distributed according to the gunas that arise from each one's own nature.
Reflection
What does your actual inner constitution want to do that you have been trying to override?
Read this verse in its chapter: Chapter Eighteen
Krishna begins the varna sequence. Four orders, four work-textures, distributed not by inheritance but by svabhava-prabhava guna, the gunas arising from one's own nature. The reading that matters is functional, not genealogical. A person carries within them a dominant cluster of qualities, and a class of work is naturally suited to that cluster. The next four verses list each cluster precisely. Notice the avoidance of caste-as-pedigree language. The Gita's frame is what the person actually is by inner constitution, not what label they were born with. The teaching has been misused for centuries to defend hereditary hierarchy. The text itself is doing something cleaner.