I know I already wrote a freakin hand book-- but I forgot this--
We always say our marriage in like a railroad, you just have to keep building the dang thing to keep the train going. It is an ongoing job and it can be hard. It isn't like once you are married you magically have a marriage, it is like signing up for a never ending job that you get to work on forever. (But the railroad is well worth it, becuase of all the "great places you get to go" and the "things you get to experience").
We have fun telling people... "We can't go, we are working on the railroad!"
We call each other railroad workers all the time too, just to have fun with it. (And remind each other to keep on keeping on...)