There are thousands upon thousands of students who have practiced meditation and obtained its fruits. Do not doubt its possibilities because of the simplicity of the method. If you can not find the truth right where you are, where else do you expect to find it?
DogenThe one and only thing required is to free oneself from the bondage of mind and body alike, putting the Buddha's own seal upon yourself. If you do this as you sit in ecstatic meditation, the whole universe itself scattered through the infinity of space turns into enlightenment. This is what I mean by the Buddha's seal.
Dogen