Pray the 15 decade Rosary everyday.
Be sure you hold all the true positions on the Catholic faith: www.schismatic-home-aloner.com
Get into the state of grace, avoid clear mortal sins and occasions of sin (popular/rock music, sinful and immodest themes on TV, computer games, etc.)
When our body is sick, we give it pure juices and good medicine. It's the only way to combat illness, by forsaking things that will not facilitate recovery.
When our spiritual state is sick / under attack, the same recipe applies. "Get into a state of grace" is absolutely essential. Do not go near anything that is not pure.
One thing for sure, don't even think
you can combat this. You can't. Get yourself to a trad priest
asap.