I meal plan like so:
Sat: picnic/oven night (ie chips n shit)
Sun: sambos+salad/meaty stew
Mon: pancakes/chicken fajitas
Honestly, it gets no more complicated than that, and we can always change the order have brinner
I also have a loose rota of cleaning:
Mon: change bedding+wash it, batch cook, sweep and mop.
Tues: clean kitchen, clean den/playroom (room with tv which should be ds' but he still sleeps with us!).
Wed: clothes wash, clean bathroom, sweep+mop.
Again, if I miss a day it doesn't matter, and at least I'll remember to change bedding more than once a semester month.
It's all come together very recently - like, 'post-Easter' recently!
I can: put together Ikea furniture like a pro, remember birthdays/anniversaries off the top of my head amd give you an episode-by-episode run down of every seadon of X-Files 
By now (pushing 40), I thought I'd be able to:
Drive
Budget
Save
Have a 'holiday wardrobe'
Have matching shoes-handbag
Be able to wear a pretty scarf without feeling an enormous dick
Have a will
Have a mortgage
I have a DH, a DS, car, a joint account, a passport, live abroad, translate for my parents when they visit, have a job with a lot of responsibility. Yet when my boss is telling us about our holiday rota this year, or medical entitlements, or how our tax has changed - in my head I'm singing the Batman theme tune, laying on my stomach on the livingroom carpet with my My Little Ponies! I want to tell my boss: I don't know why you're telling me all this, I'm only 7!