Show no Hatred towards any Being
It would be utter foolishness to give a golden cup to a child or to give a sword to a madman. A golden cup, which is highly valuable, should be given only to a person who would appreciate its value. Such a person will derive great joy from it and know how to use it. In the same way, the one who knows the value of devotion will use it to fill himself and others with pure joy. Genuine love will never give trouble to anyone, it will never lead one to hate another. In the 12th chapter of the Gita the desirable qualities of a devotee are enumerated; they start with 'Let there be no enmity directed towards any creature in the world.' Repeating parrot-like, "Lord, I love you", "Lord, I love you", while at the same time giving trouble to others cannot be considered devotion.
You become a devotee, filled with love and devotion, when you surrender yourself completely and are ready to carry out every command of the Lord. Arjuna, out of pride and egoism was feeling dejected; but after listening to the Lord, Arjuna fell at the divine feet and said, "Lord, I am your disciple. Teach me what is good for me. I surrender myself fully to you." Up until that time they were treating each other as brothers-in-law. Arjuna was married to Krishna's sister. But once Arjuna said, "I will do as you say. I will carry out your commands!", he became a devotee. The transformation took place in his mind, as he changed the relationship from a brother-in-law to that of a disciple, with the Lord as his teacher. Such a mental transformation is absolutely essential for a devotee. Without this, whatever level of closeness you feel you may have developed with the Lord, your devotion will remain fruitless and useless.
Being aware of these high principles, do your duty in life. Maintain an even mind and make sure that the work you do is good, and that it is always appropriate to the occasion. These verses from the Gita should not merely be memorized but they must be put into practice. When you fully understand their meaning and practice them in your daily life, your worries will soon leave you and all your sorrows will disappear.
