I agree with approaching it like a job. I get a monthly "salary" and we agree quarterly family "goals" in addition to the day-to-day grind of chores.
I also approach it like a job in the sense that, finances permitting, I choose to outsource some of my work as needed. A cleaner, childcare some days, dry cleaner for DH's shirts on busy weeks. Especially if I can make a "profit" on my time by earning money through eBay whilst someone else looks after the DCs. (ROI/Return on Investment anyone?)
Try to find a chance to let DH experience the joys of being a SAHM for himself. A day isn't enough, he can muddle through that by having a fun day. 2-3 days away ought to give him some insights!
crafty my DH leaves his crap everywhere too, drives me insane. I also got deeply resentful about cleaning up after everyone else repeatedly, hence the cleaner.
I haven't got it sussed though, am far from happy being a SAHM. DH usually ignores my efforts and I have to make a point to tell him about my achievements. FWIW, I am looking forward to getting back into some kind of paid-work environment to rebalance things a little!