There are cards that allow you quiet walks by the river which make your nightmares go down. You can deal with nightmares if you have lots and lots of secrets. You can buy a goldfish. Having a high Persuasive works, too.
It's not *that* bad, it just looks that way in the beginning. Yeah, you have to accept that you're going to go a little crazy all the time, but it's possible to bring it back down with relatively little trouble.