I'm not good at meditation. My mind wanders, and usually it wanders in a negative downward spiral. I think the combination of mantra and mudra works for me. I was able to concentrate on that and not get lost in negative or random thoughts.
To practice the Kirtan Kriya touch each of the fingers consecutively to the thumb while saying the matching word--as shown below. Envision the sound coming down through the top of your head and out through your third eye. Repeat starting with the pointer finger. When you are done open the hands and say Aaaah. Detailed instructions for the 12 minute version are available here.