The TL;DR is that it was great for the first few years. He started diving deep into his writing passion and notes that he was very happy. Later, his writing hobby slowed and his partner became increasingly dissatisfied with their retirement lifestyle. Sadly, he talks about slowly losing friendships, losing interest in his writing, and eventually losing his marriage over FIRE-related lifestyle choices. I'm sorry it didn't work out for him, but it's an interesting contrast to this prior post about how he imagined his FIRE lifestyle.