I inexplicably lost my balls. I progressed with instruction through my first three years of track days. Year four I came out and just didn't feel like pushing, so I decided I was going to just ride around at a comfortable pace. I assumed that just through experience the comfortable pace would increase. I think what happened instead is I got so locked into the same pace that anything ever the slightest bit faster was instantly uncomfortable. First day of year five I was seven seconds off my pace from the previous year and blamed it on a GP shift setup. Second day I was seven seconds slower than that. Thought about dropping the cash on race tires/warmers/generator for bolt-on confidence, but instead just threw in the towel. I wasn't 100% confident in the bike I was riding year 5, and a particular accident did cross my mind a few times, but I am not sure if these were causes or effects. Basically my advice if you want to go faster is to not spend much time just riding around out there, always seek instruction and be willing to push just that little bit more. I hope to be back at some point I just needed the reset.