Lets first see how Bhagavad Gita changed Arjuna’s life
Before: na hi prapaśyāmi mamāpanudyād yac chokam ucchoṣaṇam indriyāṇām avāpya bhūmāv asapatnam ṛddhaṁ rājyaṁ surāṇām api cādhipatyam [Bhagavad Gita 2.8]
I can find no means to drive away this grief which is drying up my senses. I will not be able to dispel it even if I win a prosperous, unrivaled kingdom on earth with sovereignty like the demigods in heaven.
Why Should One Worship Lord Krishna – Krsna is hailed as the Supreme Person in almost all of Vedic scriptures. Then why people in general are not able to comprehend if it’s so straightforward? The reason is that people do not bother to read the scriptures scrutinizingly and even when they do, they get swayed by the myriad of explanations on the multitude of dimensions the scriptures portray. Thus they miss the real meaning. So let us see how Krsna can be accepted as the Supreme Personality from the ontological (Vedic), historical and empirical perspectives.