Why do you practice Yoga? Is it for fitness, relaxation, because your friends do it? Yoga is not something that we do in order to get something. It is a practice for life. If you've been practicing and haven't noticed any changes beyond the physical, perhaps it's time to change your perspective.
Yoga is an ancient practice and science. What was discovered long ago by the ancient yogis was that there was more to meditation than what they new. With each new level of consciousness reached, they sought more, they reached further. Today, although our practice begins with the physical, we still must strive to go beyond what we know we can do. We must seek beyond what we want.
Through fitness, we find strength and balance in our bodies which moves us beyond our limits; beyond our fears. Through relaxation we find an inner calm that we can draw upon even in the most stressful of situations. Through connections with others, we discover the bond of all things in the universe.
How can your practice move you beyond your self? Take the time to seek more than what you expect, more than what want. Dedicate yourself more fully to the practice and be open to the experiences that arrive on your path.