It takes me one call in the morning, of me saying for the hundreth time in the past 8 months that the integration is still missing data, to get me off the rails for the day. I know at 10AM that I won't touch anything else after work.
Been contemplating starting early and dedicating "the best hours" to myself.
That was something I have considered for a while, but then figured out it is unrealistic because I have a kid. But original replier probably can do if he/she doesn't have one.
I realized that frustration from work usually spills over to other parts of my life, not surprising as work is usually the first big thing we do during a day. I'm exactly like you -- when I have a lot of frustration from work, then I wouldn't want to work on side projects. It has nothing to do with how many hours I have.
I also have some bad sleep patterns as I only sleep about 5-6 hours every night most of the time.
I think, it might be useful to learn some mental skills to compartment one's mental state. If I could somehow put that frustration from work into a separate space without it spilling all over the ship, it would definitely help a lot. But so far I don't know how to do it -- plus I have a kid so I can't chill down after work until late night.