On Advaita Vedanta: Knowing that you will lose, fight as if you have already won

The following excerpt is from a samvaad (dialogue) session with Acharya Prashant.

निद्राया लोकवार्तायाः शब्दादेरात्मविस्मृतेः ।
क्वचिन्नावसरं दत्त्वा चिन्तयात्मानमात्मनि ॥

nidrāyā lokavārtāyāḥ śabdāderātmavismṛteḥ…