There is a relentless war between good and evil which has to be fought whether one likes it or not.

सक्ताः कर्मण्यविद्वांसो यथा कुर्वन्ति भारत।कुर्याद्विद्वांस्तथासक्तश्चिकीर्षुर्लोकसंग्रहम्॥॥३- २५॥न बुद्धिभेदं जनयेदज्ञानां कर्मसङ्गिनाम्।जोषयेत्सर्वकर्माणि विद्वान्युक्तः समाचरन्॥॥३- २६॥`Ignorant toil for result; wise – selflessly,Blaze the trail for detached action clearly,For the common weal, path to eternity,For the benefit of the entire humanity.’3. 25-26

श्रेयान्स्वधर्मो विगुणः परधर्मात्स्वनुष्ठितात्।स्वधर्मे निधनं श्रेयः परधर्मो भयावहः॥॥३- ३५॥`Better one’s own duty, be it humble,Than that of another – else you’ll stumble,Better to risk death at the post of duty,Than perils of intrusion on others surely.’3. 35

मय्यावेश्य मनो ये मां नित्ययुक्ता उपासते।श्रद्धया परयोपेतास्ते मे युक्ततमा मताः॥॥१२- २॥Best but all are those that be,Absorved in My full faith truly,Devote themselves but absolutely,To My worship - ever diligently.12. 2

सदृशं चेष्टते स्वस्याः प्रकृतेर्ज्ञानवानपि।प्रकृतिं यान्ति भूतानि निग्रहः किं करिष्यति॥॥३- ३३॥इन्द्रियस्येन्द्रियस्यार्थे रागद्वेषौ व्यवस्थितौ।तयोर्न वशमागच्छेत्तौ ह्यस्य परिपन्थिनौ॥॥३- ३४॥`Each is prone to follow his nature,His senses stormed by earthly pleasure,Submit not to them they be your foe,Else you will reap what ever you sow.’ 3. 33-34

Krishna taught in the Bhadavad Gita: ‘karmanyeva-adhikaraste ma phalesu kadachana’, which means, ‘Be active, never be inactive, and don’t react to the outcome of the work.