Techniques Anyone Can Use
There are a number of techniques that anyone can use to get rid of your average ghost, which don't require any particular psychic ability at all. Mostly these revolve around understanding that ghosts are people, too. Even if they're dead people, they still have the beliefs and feelings that they held when alive. So, you can think of them as simply unwanted houseguests. They can leave if they want to. You just have to make them want to. It's about psychology. I've divided the basic options into six categories.
1. Ask them to leave, explaining that they are dead and it's time to move on. Explain that they need to look around them and listen for spirits who are trying to get their attention to help them into the light.
There's nothing wrong with being courteous the first time you ask someone to leave. The newly dead are often confused. They don't understand what's happening to them or why everyone is ignoring them. So, explain it to them kindly. Point out there are those in spirit that are there to help them. In some cases, you may also need to provide reassurance that they aren't going to Hell to burn forever (since if they're afraid of that, there's no way they're going to leave their ghostly existence no matter how bad it is). In the case of family and loved ones who have died, it may also help to let them know they can come back and visit you once they have completed their transitions. The bond of love does not end with death, and they may want to be able to reassure themselves that we are okay.
2. Tell them to leave.
This is a case of being more firm. Sometimes it's just that simple. But say it forcefully, as if you really mean it.
3. Make the place they're haunting unpleasant to be around.
This can involve telling nonstop knock-knock jokes ad nauseum, playing It&'s a Small World After All for hours on end, or doing just about anything else that would drive a normal adult mad. Personally, I think rap music would work well, but I wouldn't be able to stand it long enough to be effective .... Verbal abuse is another method of annoying them out of your house. Someone I know did nothing but harangue the ghost and say horrible things to it for days on end. It left and didn't come back.
Embarrass them out of the house. Believe it or not this works. Laugh at them.
Ask their guides (or yours) to move the spirit on for you. I always figure your guides are their to help you. Furthermore, since it's really
not in a ghost's best interest to be stuck as an earth-bound spirit, their guides don't want them to stay, either. So you can call on both your guides and theirs to move the ghost on. Some people do this in prayer.