योगवासिष्ठः yogavāsiṣṭhaḥ - book-2, chapter-8, verse-4

ह्यस्तनी दुष्क्रियाभ्येति शोभां सत्क्रियया यथा ।
अद्यैवं प्राक्तनी तस्माद्यत्नात्सत्कार्यवान्भवेत् ॥ ४ ॥

hyastanī duṣkriyābhyeti śobhāṃ satkriyayā yathā ,
adyaivaṃ prāktanī tasmādyatnātsatkāryavānbhavet 4

4. As a past misdeed of yesterday is rectified by a good action of the following day, let this day therefore supercede the past, and employ yourself to-day to action.