कर्मण्येवाधिकारस्ते मा फलेषु कदाचन। मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि॥ २.४७॥
Complete Sanskrit verse · source linked below; explanation is a new paraphrase
Plain-language interpretation
A well-known teaching on action: we can act with care and sincerity, while recognising that outcomes are not fully under our control.
Krishna addresses Arjuna about action, its fruits, and attachment to inaction. Read in the context of the surrounding discussion.
A practical reflection
Choose one small task today. Give your attention to doing it well, without checking the result every few moments.