Cowardice does not suit you, Partha. The Gita's courage is not aggression. It is the refusal to abandon your dharma because the heart is tired.
क्लैब्यं मा स्म गमः पार्थ नैतत्त्वय्युपपद्यते। क्षुद्रं हृदयदौर्बल्यं त्यक्त्वोत्तिष्ठ परन्तप।।2.3।।
O Arjuna! Why give way to unmanliness? O thou, who art the terror of thy enemies! Shake off such shameful effeminacy and make ready to act!
स्वधर्ममपि चावेक्ष्य न विकम्पितुमर्हसि। धर्म्याद्धि युद्धाछ्रेयोऽन्यत्क्षत्रियस्य न विद्यते।।2.31।।
You must look at your duty. Nothing can be more welcome to a soldier than a righteous war. Therefore, wavering in this resolve is unworthy, O Arjuna!
हतो वा प्राप्स्यसि स्वर्गं जित्वा वा भोक्ष्यसे महीम्। तस्मादुत्तिष्ठ कौन्तेय युद्धाय कृतनिश्चयः।।2.37।।
If you are killed, you will attain Heaven; if you are victorious, you will enjoy the kingdom of earth. Therefore, arise, O Son of Kunti, and fight!
श्रेयान्स्वधर्मो विगुणः परधर्मात्स्वनुष्ठितात्। स्वधर्मे निधनं श्रेयः परधर्मो भयावहः।।3.35।।
It is better to do one's own duty, however lacking in merit, than to do that of another, even though efficiently. It is better to die doing one's own duty, for doing the duty of another is fraught with danger.
तस्मात्त्वमुत्तिष्ठ यशो लभस्व जित्वा शत्रून् भुङ्क्ष्व राज्यं समृद्धम्। मयैवैते निहताः पूर्वमेव निमित्तमात्रं भव सव्यसाचिन्।।11.33।।
Then gird up your loins and conquer. Subdue your foes and enjoy the kingdom in prosperity. I have already doomed them. Be thou my instrument, Arjuna!
यदहङ्कारमाश्रित्य न योत्स्य इति मन्यसे।मिथ्यैष व्यवसायस्ते प्रकृतिस्त्वां नियोक्ष्यति।।18.59।।
If you in your vanity think of avoiding this fight, your will shall not be fulfilled, for Nature herself will compel you.
यत्र योगेश्वरः कृष्णो यत्र पार्थो धनुर्धरः। तत्र श्रीर्विजयो भूतिर्ध्रुवा नीतिर्मतिर्मम।।18.78।
Wherever Lord Shri Krishna, the Prince of Wisdom, and Arjuna, the Great Archer, are, I am certain that good fortune, victory, happiness, and righteousness will follow.