It really helps to have a morning routine. Or a night time one. Or both, But I give up on night ones because my brain shuts down by 9pm. And if you are a SAHM, it really helps to have a short routine when you pick DC up from school.
In the morning I:
open curtains and windows and make my bed
go downstairs with a load of dirty washing in my hands and stick it in the machine
put the kettle on
feed the cat
empty and reload the dishwasher
make a cup of tea and a pot of coffee
wipe all kitchen surfaces
make packed lunches for DC and get breakfast ready
all before DC get up. I love that quiet time with music on , potteirng about. Never feels like work. I love the sound of the two machines whirring away, cleaning stuff.
When DC were little I'd do the school run and by the time I was back the washload would be ready to be hung out, so i'd do that first thing.
After school routine was:
hang up coats and shoes
empty school bags to check for soggy, screwed up remnants of homework sheets, letters and permissions slips and party invites
empty packed lunch boxes and water bottles
give DC a snack and chat about their day
act on anything urgent immediately: fill out forms, put dates in diary, locate any non day-to-day stuff for following day and put it in school bag or in the hall so you can't forget it (PE kit/wellies for pond-dipping/return library books etc.)
Keep a shelf clear in your home for anything borrowed - any books from school, toys from friends etc.