Take a moment to quiet yourself. Sit comfortably in a chair with your feet on the ground and your hands in your lap or on your knees. Say to yourself or out loud, "I ask my higher self to examine my subconscious mind and remove any blocks keeping me from being 100 percent willing and able to dowse, and to dowse accurately." Then, because nature hates a vacuum, add, "Fill any space that is created with love and light."
You may not need to do this clearing more than once. But if you find yourself having trouble, you can repeat this step. In the beginning, you may want to add it to your preparation and centering before each dowsing session.
Intuition in an Instant, by Kathryn Klvana