As someone already pointed, a hymn or verse or mantra motivating for someone might not work for another because of subjective difference. Anyways, some of the popular compositions of Vedanta and spirituality are:
Nirvana Shatakam by Adi Shankaracharya
मनो बुद्ध्यहंकारचित्तानि नाहम् न च श्रोत्र जिह्वे न च घ्राण नेत्रे न च
व्योम भूमिर् न तेजो न वायु: चिदा...
Here are a couple of inspiring verses.
gayanti Deva: kila gitakanti dhanyastu ye bharatabhumibhage
swargapebargasye phalarjanya bhabhanti bhuyo purusha suratwat
It seems that the gods sing songs to this purport. Those who live in
this part of the world called Bharata are in fact blessed. In order to
enjoy the fruits of heaven and salvation they are born as ...
This is from Rigved. I find this enthralling and motivating especially when I listen to it here after reading its meaning.
संगच्छध्वम् संवद्धवम् संवोमनाँसि जानताम् ।
देवाभागम् यथापूर्वे सञ्जानानम् उपासते ।।
May we march forward with a common goal.
May we be open-minded and work together in harmony.
May we share our thoughts for integrated wisdom.
May we ...
The scene you're referring to is adapted from Kālidāsa's play Abhijñānaśākuntalam. 'śāntaṃ pāpaṃ' is the Sanskrit equivalent of 'god forbid' or 'heaven forbid'.
Here's how Monier Williams explains it:
'Peace! a sin!' i.e., Silence! let me not listen to such sinful words; or, if no stop is placed after śāntaṃ, 'May the sin be palliated!' This seems to be the ...