Stop turning on your emotional television to watch the same program over & over again, the one that shows how much you suffered from a certain loss: that is only poisoning you, nothing else.
The demons of the Devil don't use your weak weaknesses against you, they use your strong ones. If you're rational and logical, they argue their case rationally and logically. If you're loyal and faithful, they turn those against you. If you're passionate and emotional, they make you passionate and emotional about your worse fears. Your weak weaknesses are no use to them.... They find the strongest weaknesses you didn't know were yours and use those against you.
Values are related to our emotions, just as we practice physical hygiene to preserve our physical health, we need to observe emotional hygiene to preserve a healthy mind and attitudes.
Simply put, you can read a story in a single sitting and hold it all in your mind. You can experience all of its rhythms, beginning to end, during that span. Consequently it has, I think, greater emotional power than a novel because of this real-time effect. Stories can stun you.