I play after work as well and it's more difficult to play longer sessions, since you're more tired and not focussing as much as you would like. Perhaps this makes it look like the games are harder?

I used to have the same thing thinking about hands in bed. That sucked so much, I nowadays just review my session after playing (pick some hands to discuss with my mate, send them to him with my thoughts) and schedule it so I have at least 30mins-1hour to watch some (comedy) show I dl-ed and take my mind of things before I actually go to bed. It's always important to be relaxed when you go to bed and not wondering/thinking about stuff, cause you can lie awake for what feels like ages and sleep less comfortable, while instead you could have stayed up 30mins more (some are even 20mins) and be relaxed and sleep well.