When you indulge in desirousness, whether your desire is towards heaven or hell, you give the anima or animus an object; then they are extroverted into the world, not within so the thing that ought to be of the night is of the day, and the thing that should be under your feet is on top of you. But when you can say: Yes, I desire it, yet I do not indulge in it; I will make up my mind to have it, I will try to get it, or if I make up my mind to renounce it, I shall renounce it; if your conscious attitude is such, then there is no chance for the anima or animus. But if you are drawn by your own desires, naturally you are possessed.

Jung