The quote from "Don Quixote" by Miguel de Cervantes highlights the importance of recognizing and appreciating good fortune when it presents itself. It suggests that those who fail to take advantage of their lucky breaks have no right to lament when opportunities slip away. This wisdom reflects a broader life lesson about being open to and seizing chances that can lead to success or happiness.

Cervantes emphasizes a proactive attitude towards luck, implying that appreciation and action are key. If one does not cultivate an awareness of the positive moments in life and make an effort to embrace them, these fleeting opportunities may vanish without notice, leaving one with regrets instead of fulfillment.