The character in Larry McMurtry's "Duane's Depressed" reflects on lost time, realizing that he has squandered years without fully embracing the opportunities that life offered him. This realization brings a sense of regret, as he understands that time is a finite resource, and once it is gone, it cannot be reclaimed.

This moment of insight highlights the importance of seizing the diverse opportunities that present themselves throughout life. For the character, the passage of time has been marked by inaction, suggesting a need to become more aware and proactive in pursuing fulfilling experiences and possibilities.