How do you get rid of bad spirits?

Answer 1

The early Christians believed that evil spirits or demons often entered humans. In fact they believed that mental illness and even sicknesses were caused by possession by evil spirits. We now know conclusively that mental illnesses and unusual behaviour are not caused by spirits. However, belief in possession by evil spirits has not entirely died out, and a few people sometimes still take part in "exorcisms" to drive out evil spirits. Sometimes these procedures are dangerous in themselves; sometimes they merely prolong suffering by delaying proper medical attention. Whatever causes someone to consider evil spirits to be present, the best advice is to seek proper medical advice.

Answer 2

I would say pray to god and trust in Him