spiritual means the mind and spiritual people are those who seek its nature. Through this they come to understand the effects of their behavior, the actions of their body, speech, and mind. morality is the wisdom that understands the nature of the mind. when you know the nature of your own mind, depression is spontaneously dispelled. whatever pain, pleasure, or other feeling you experience, it is all an expression of your mind. when you discover that true satisfaction comes only from the mind, you relize you can extend this experiance without limit, and then it is possible to discover everlasting happieness....so its actually very simple
Lama Yeshe