I don't remember any big insights except that I'm pretty bad at estimates. Everything that feels like a "half-day" task took an entire day or two. I would look

I don't remember any big insights except that I'm pretty bad at estimates. Everything that feels like a "half-day" task took an entire day or two. I would look back on every feature and think, "No way was I working on that for X days straight?" Basically nothing takes less than half a day.