Marry someone with a good sense of humor.

The vast majority of the time you spend with your spouse won’t be on luxurious Italian vacations, or sipping wine at a fancy restaurant. Most of your time together will be spent changing diapers, and debating who’s turn it is to switch the laundry, and adding milk to the shopping list, and filling out health insurance forms.

And you definitely want to be doing all that with someone who can have a laugh about it.