I failed the C1 written exam again. My feelings were positive on 2018-12-11, but not so much now. Thankfully, I wrote in a strategy for dealing with failure before I sat the exam the second time last month. So, I will follow my own advice and not look at this German ball of wax (exam-wise) until the end of July 2019 at the earliest. In the meantime, I will read, write, and listen to the news regularly. Also, I will timebox my sulking today. Harumpf!
Update: I received the exam details, and have written those up in the follow-on post titled telc Deutsch C1 the good, the bad, and the ugly. Looking closer, I have actually passed the majority of the telc C1 exam.