All of your thoughts are perceived as real by your mind and body. For example, if you think fearful thoughts, your body is likely to tense. If you think positive thoughts, your body is likely to react in a positive way. When you constantly revisit a thought or an idea, especially in the midst of a mind-body activity such as yoga, the effects of these thoughts settle deeply in your body, therefore making them more of a reality versus just a noble idea.
However, if that’s just all too much on the spiritual level for you, don’t worry, just come to yoga, stretch your body and take your thoughts to wherever they take you. You won’t be judged! But you will feel a whole better after a class. What have you got to loose?