Another theory is that the purer the soul, the less vulnerable the person is to the bad wishes of others. The person literally has the ability to transcend vengeful or negative thought or energy either by turning it into good energy or sending the energy back to its source. In essence, true love soul mates don’t cure each other or get jealous.

Negative wishes that are inspired by an emotion, such as jealousy, also often backfire, even if the wish is justified. For instance, wishing that your ex-husband's girlfriend was out of the picture so that you could receive more child support is a wish that is likely not to be fulfilled. You are better off to rephrase the wish, "I wish for the highest good for my children."

When it comes to wishing, sometimes it is better to wish for the essence of a thing, rather than the thing itself. For instance, wishing that a certain person always be a part of your life as a soul mate might result in you suffering a lifetime of unrequited desire as this individual drains your energy and resources while at the same time resisting intimacy. It is also a bad idea to wish for a soul mate by name as in "I wish so and so would come back to me." 

You are best to ask for something general, such as "I wish for the perfect soulmatethat is mine by Divine Grace." Or "I wish for the highest good for both me and so-and so." This takes the controlling aspect that can cause a negative rebound reaction in your life, out of the matter of reincarnation soul mates.