There's been a lot of talk about the Devil, demons, possession, etc. under the young pontificate of Pope Francis. All very, very good developments that should give all serious Catholics hope, and all lukewarm prelates shivers. But it should also be a warning that everyone is vulnerable to the wickedness and snares of the Devil, and all must pray to be protected, and pray for the exorcists that are fighting this battle daily.
There is a wonderful, daily set of prayers, approved with an imprimatur, to help you and the exorcists. And Rorate has gained permission from the priest authors to publicize it.
Click here to see the prayers, the rules surrounding them and the requirements to be a member of the Auxilium Christianorum.
As someone who works to help the Poor Souls in Purgatory, I can attest to the real attacks that come from that work (especially after creating the Rorate Caeli Purgatorial Society), and the incredible relief these prayers bring. I can also tell you I know people who simply had a type of "fog" around them that these prayers fixed quickly as well.
One caveat: as the fathers say on the site, please try to consult a traditional spiritual director before starting the prayers, if you have one available. If not, seek out a traditional priest in the confessional, and speak to him. These prayers are serious, and must be taken seriously.