I would like to thank you all for your answers. I am trying a 21-day treatment, working also with meditation techniques that you gently suggested, and taking a chance on a Reiki variant attunement: Karuna-Ki Reiki, a suggestion which I took from my Master. Only by meditation and application on people, animals and plants I already feel it growing stronger, but I feel more secure if I do the "treatment" again and on the other hand I take my chance on Karuna-Ki. I will let you know if it is worth! Namaste