This is my top tip, it probably takes about a year to start really helping but you know, start in January!
Set up weekly family meetings, say Saturday lunchtimes. Get everyone around a just whip through the amazing trigger list. Keep a shared note of any decisions taken. You can stick the note on the fridge and people can add items too.
I think I got the original list from Mumsnet (of course). Any obvious ones I have missed?
Obs everyone whinges as they really want you to do it all but after a while they do start to think for themselves. DHs and children.
Trigger list
Does anyone need to go to the doctors?
Does anyone need to go to the dentist?
Does anyone need any medicine?
Does anyone need a haircut?
Does anyone need a lift anywhere?
Does anyone need to a birthday present?
Does anyone need something special for school?
Does anyone need to work on homework?
Does anyone need money on their account at school?
Does anyone need school uniform?
Does anyone need jumper / coat / sports equipment?
Does anyone need phone credit?
Is new season stuff / equipment required?
Any important plans, birthdays or dinners?
Is the pet OK?
Does any equipment need replacing?
House stuff:
Bills: council tax, mortgage, electric, gas, insurance
Homework check
Special supermarket requests
Are subs for each activity due?
Is there a playdate / school trip?
Is afterschool club paid for?
Anyone have anything they want or want to bring up?