In our human form, we are mere actors. You see, all those thoughts that vibrate in your heart are not initiated by you. They are simply thought forms "spirit" that roam about seeking where to reside. They could be termed evil or good spirits. They are spoken words or ideas of someone else at some time in the past which you just picked up on the way and act as a medium to express them.
Do you understand? If not send me a request to write a hub about it.