Some spiritual advisers recommend meditation as a way to learn your guardian angel's name. The meditations may vary slightly from one adviser to the next, but they typically begin with finding a quiet, peaceful place and assuming a relaxed state of mind.
Sit in a comfortable chair with your bare feet on the floor. Take a few moments to remove or loosen any tight or binding articles of clothing, such as belts or jewelry. Breathe deeply and envision your tension dissipating with each exhaled breath.
Start counting your inhaled breaths, and remain aware of your breathing. With the 20th inhalation, ask your guardian angel for his name. Remain quiet and relaxed, and wait for the name. It may subtly enter your thoughts, or you may hear your guardian angel reveal the name in an audible voice.