One of the most important parts of any exorcism, demonic or human, takes place after the entities are banished. The formerly possessed person MUST be made to understand their own part in allowing the entity to infect them in the first place. If that person is not cooperative in this respect, then the same spirit, or another who is waiting in the wings may simply slip back into his or her life or body.
In order to prevent this sort of “repossession”, the newly exorcised person actually has to make changes in his or her attitude and lifestyle. This can be very difficult, and many people simply don’t want to make the appropriate changes. It means giving up alcohol or drugs. It means finding new friends who are not into Satanism, alcohol, drugs or criminal activity. It might mean finding a new job or a new place to live. Staying spiritually clean is no more easily done than remaining clean after going cold turkey from meth or heroin. In most cases, some aspect of their old lifestyle was what attracted the invading spirit in the first place.
It will also be necessary to adopt orthodox religion and attend church or synagogue regularly. This may be the most difficult part of the exorcism process, but it is also the most important. The advantages of adopting traditional religious values include a deeper knowledge of right and wrong which will help immensely in avoiding future repossession, as well as the presence of fellow parishioners and the support of new friends.