2012 when I started a business with a friend. We moved out of the city and into a small town in the mountains an hour away and lived off of our savings. I wrote more code that year than ever before and I wrote almost all of it from scratch, making my own crappy but perfectly suited framework. Because I wrote it all, I understood it all and productivity was phenomenal. We self organized without sprints, or stand ups, or any other processes, and we made some great stuff. Many a day was spent writing code and then mountain biking in the afternoon, some of it was bliss, some of it was horrible but overall a valuable experience.