In the vein of dull advice, how about packing up a diaper bag and getting a car seat in your car. Then pick a small item that you cannot leave the house without bringing along. You can’t forget it in the car either, you need to bring it with you wherever you go, so make it something one of you can put in a purse or bag. For me, when we had our first child, the realization the next morning was that we couldn’t just jump in the car anymore and go. It had now become a process.