It is the power of one's intention that drives the energy of a wand, so it is a good idea to program your wand for its intended purpose, especially if it is specific. For example, if you want some crystal help with lowering your high blood pressure, you might choose a stone such as tourmaline, as it helps with many types of blood conditions. But tourmaline is also beneficial for many other areas of the body , as well as for many other types of ailments (earache, insomnia, laryngitis, and epilepsy to name a few). And so you may wish to give your tourmaline specific programming so that its energy is focused on lowering your blood pressure.