My House is haunted to, i was walking around my house with a little brother, so i walked into the attic (stuffty idea eh?) and the dresser fell down in the attic, i looked behind me, and there was a figure standing on the dresser staring at me, it was my grandfather, little brother heard it and ran upstairs and YELLED AT IT i was like "Shut the forget up now" It looked at my brother, then looked at me smiling, the next morning i found a DEEP cut in my wrist, the weird thing is, it doesnt hurt, there has been many family members in my house, so then i said "We do Not Need you here, we have done what you wanted, you can return home" As you see, some ghosts will through things to get your attention, and they want something to be done, poultiguists how ever, were suicidal or homicidal, and want death, so we could say they will "Posses" you.
I just want you to know, your not alone, any questions, just ask :)