What is It is invariably saddening to look through new eyes at things upon which you have expended your own powers of adjustment?

The phrase reflects the bittersweet nature of personal growth and change. When we gain new perspectives, it can be disheartening to realize how our previous understanding or adjustments may have been limited or misguided. This experience often highlights the contrast between our past efforts and a newfound clarity, prompting feelings of nostalgia or regret. Ultimately, it underscores the ongoing journey of self-discovery and the importance of remaining open to new insights.