Yet it is also clear that I have truly developed as a teacher over the years as well. Looking at some of the past resources, I can see where my skills and abilities have grown over the decades. The materials I've built in the past few years are of substantially better quality in both content and design than what I made in the past. The thing is that I remember those older materials fondly and in a better condition than I am currently finding them.
I guess that's true for many of my memories from the past. Time softens the edges and enhances the feelings about them which sometimes makes evidence from the past jarring in its difference from the events that I constructed in my head. While it is a little sad to have my memories tarnished with the harsh light of reality, it is nice to see that I am continuing to develop and improve.