I doubt that anyone would disagree with the fact that as we get older (62 here) we find there are good days and there are not so good days. I find this very true when applied to my days on a bike. Enjoying a good day is a must.
On a recent metric century ride I had a very good day. A friend of mine, a number of years younger, and I traveled to a neighboring state for a club ride with some riders he knows. There were no "racers", just the normal riders in a club. After a few miles the lead group was about 20 riders. I was just hanging around the back to see what happened.
After 20 something miles a few of the riders started falling off our 22 MPH pace. For some reason, I felt as though I was barely putting forward any effort. Then we turned into a wind and the front riders started falling off the pace quickly. After 25 miles my friend and I found ourselves out front. He told me he would need to stay on my wheel, which was OK as I felt good.
We stopped at the 30 mile rest stop for water. Then we wound through a few stop signs and lights to get out of a small town and back into the hilly countryside. The wind was directly into our faces and would stay that way for the next 20 miles. By this time my partner said he was falling back and wanted me to go on if I felt OK. Surprisingly, I did feel very strong. I actually had some "kick" for the last couple miles.
My legs felt good and my breathing was under control.
Not only was I the first finisher, but it was 14 minutes until the next rider came in. Where this performance came from I do not have the least idea. No this was not a race, but I had never finished this strong before, and probably will not again. Therefore, I enjoyed the good day VERY MUCH. Just forget the bad days.