I'll add something that is extremely important to understand.
Before you can find the Guardian Demon, you need to open yourself Psychically. You don't have to become a Medium or a Siddh, it's about something else: the Ability to hear and interpret the Signals, to understand them. It is not a matter of one month, not even one year, but you will find your Guardian. Your level of Spiritual Development really plays an important role in this task.
You need to perform Meditations on Strengthening the Chakras, Strengthening the Third Eye and Astral Ears, Strengthening the Pineal Gland, Strengthening the Aura. All this will increase Sensitivity to Energies. You need to Enhance this Sensitivity, desire alone is not enough.