Take control and brave the fates, for true love is hard to find.
This catchphrase is trying to get at a couple of points.
1. Take control: The reader is going to be in charge
2. brave the fates: There's going to be "danger"
3. true love is hard to find: It ain't gonna be all happy, but romance is here. This also hints at my belief in the deserved rarity of a Fairy Tale Ending.
I'm not really sure if self-published books need taglines. But I've got mine ready.