Meditation is only difficult if one tries to do it perfectly, which is not really possible. Meditation is not successful unless we see interesting things in our mind. Although some meditations are specifically for visualizing, many are not. In those meditations, seeing things may be entertaining, but is not essential. Even visualization does not necessarily require seeing.
Some people sense or feel things inwardly, and that's all right.
About the Instructor . . . Jim Malloy Jim Malloy is a full time meditation teacher living in Northern California. Trained as a meditation instructor in 1973 by the International Meditation Society, he has over 25 years of experience teaching meditation. He has taught meditation classes throughout the western and southwestern United States and in England. In 1975 he opened and directed a meditation center on the Oregon coast.