Actually, I am thinking about abandoning this goal. I made too many exceptions and I was untrue to myself. I also feel, that this goal doesn't serve me well. There is a secondary effect of it: 22:00 is the time of day, I start to work on my 15-minute-PhD-goal if I haven't done it during the day. This wasn't how I had intended this. I am not sure, how I can prevent this from happening in the future.