Yogastha kuru karmani sangam tyaktva dhananjaya
Siddhyasiddhyoh samo bhutva samatvam yoga ucyate
“O Winner of Wealth!”
Intoxicated with the joy of divine union, perform dutifully all your actions without being attached to outcome, whether of success or failure. To remain ensconced in even mindedness during all states of activities is yoga! To perform actions thus undisturbed by their results is to maintain the balance of yoga. This state of evenness becomes an altar for Spirit.
Guru Paramahansa Yogananda
Bhagavad Gita Chapter 11 – Verse 48 .