Manusmriti
नात्मानमवमन्येत पुर्वाभिरसमृद्धिभिः । आ मृत्योः श्रियमन्विच्छेन्नैनां मन्येत दुर्लभाम् ॥ १३७ ॥
Let him not despise himself on account of former failures; until death let him seek fortune, nor despair of gaining it.
english translation
nAtmAnamavamanyeta purvAbhirasamRddhibhiH । A mRtyoH zriyamanvicchennainAM manyeta durlabhAm ॥ 137 ॥
hk transliteration by Sanscript