I'm by no means an expert, mostly because I suck with sticking to one, but I'll share some things that have worked for me:
If you have the choice, go to work as early as possible. I get into work at 6 am and I'm out at 2:30pm, entirely by choice. It leaves me a good chunk of the day to work with afterwards. I also try to go to the gym during work hours so that I don't have to work out after. Use commuting time to play if possible, I don't use public transportation. Also, if you're playing a handheld, play on the toilet. I usually only get about 5-10 mins of play time in, but it's a dent.
Once I get home, I try to cut corners with my dinner. I don't mean eat junk food, but make foods that can cook while you do other things or that cook reasonably fast with little cleanup; I like making food in the oven, like fish with vegetables or whatever. Also use as much disposable stuff as you can, things you don't have to wash after; I use oven trays and cover them with an aluminum foil so that I can keep reusing the tray.
On weekends, take out your errands as fast and early as possible. I go grocery shopping at 8am, I'm usually done with errands by 11am. I can either play video games or do something else at that point. I save cleaning for the day I don't run errands, and that usually runs me about 2-3 hrs, depending if I have to dust furniture.
As for the "metagame" aspect of it, I'm usually very harsh when deciding to stick with a game. Unless I know from word of mouth that a game picks up at a certain point, I only give it an hour or two to get me hooked. If I'm not excited about continuing, I drop it. I also gauge my excitement for certain games at a particular moment if it's on sale, to see whether or not to buy it. It helps from building up
backlog. Also, pretty important, have a palette cleanser on hand. Even during the length of a single JRPG, it can get pretty tiresome; I usually swap out into a game from another genre to take a break from JRPGs, while only focusing on one JRPG at a time.
Hope this helps anyone.