Keep house clean and tidy -get a cleaner. House shouldn't become too awful if you work full time and have no kids.
Washing -put it on a timer, hang it out in morning. Get a tumble drier. Just keep it ticking over.
Ironing -get a cleaner to do this for you. Buy non-iron clothes.
Cook healthily -this one you just have to get on with. Cook in bulk at weekends and freeze stuff.
Shop -internet shopping.
Garden -my gut feeling is life is too short, just get a lawn and mow it occasionally. Alternatively, a little bit every day.
Clean car -car wash, infrequently, at weekends.
Stay slim -see above re eating. Track food on my fitness pal on your phone. Get a Fitbit and link the two apps.
Exercise -take up running. Walk everywhere, never take the lift, count your steps. Do 20 min workout DVDs, eg shred.
Look good and well groomed -urgh.
Organize everything -like what?
Keep on top of paperwork -big black hole drawer so at least you can't see it. Deal with everything immediately as it comes in.
Alternatively, do none of this and just be happy with yourself. Maybe ditch your OH who sounds awful?