Equanimity and Calmness - Bhagavad Gita Chapter2 Verse48
योगस्थ: कुरु कर्माणि सङ्गं त्यक्त्वा धनञ्जय |
सिद्ध्यसिद्ध्यो: समो भूत्वा समत्वं योग उच्यते || 48||
yogasthah kuru karmaani sangang tyaktwaa dhananjaya
siddhya siddhyoh samo bhutwaa samatwam yoga uchyate
(Bhagavad Gita, Ch.2, verse48)
O’ Dhananjaya (Arjuna), give up cravings and egoistic emotional attachments. Maintain equanimity and impartiality regarding success and failure. Remember the Inner Self and perform your duties to the best of your abilities. Equanimity and calmness under all circumstances are known as Yoga.