If a person wish to connect to the other-side (Sitra-Achra) and meditated on it, he will draw negative forces. The book says that this process depends on the words, actions and desire to connect to that side.
The book also reveals different actions and all that is needed to follow for idol-worshiping. Also how meditate on the desires in order to draw the related energy down.
Those who wish to cling to the Holy Spirit should have the proper meditation, actions and words.
The desires and all that attracted the person in this world follow him when he leaves this world. The same for Holy or impure desires.
Everything we desire registered and leave impression on the soul. Nothing is forgotten.
Daily Zohar # 2871 – Vayera – Plan your desires