सुखं त्विदानीं त्रिविधं श्रृणु मे भरतर्षभ। अभ्यासाद्रमते यत्र दुःखान्तं च निगच्छति ॥

sukhaṁ tv idānīṁ tri-vidhaṁ śhṛiṇu me bharatarṣhabha abhyāsād ramate yatra duḥkhāntaṁ cha nigachchhati yat tad agre viṣham iva pariṇāme ‘mṛitopamam tat sukhaṁ sāttvikaṁ proktam ātma-buddhi-prasāda-jam

And now the threefold kinds of pleasure hear thou from Me, O bull of the Bhâratas. That in which one by practice rejoiceth, and which putteth an end to pain;

In plain words: Krishna begins to describe three kinds of happiness. The first kind is a joy you grow into through practice, and it brings an end to suffering. He calls Arjuna 'bull of the Bharatas', meaning best of his family line.