Yoga is a way to escape from everything and go into your own little world it will help you to forget all the things that are stressing you for a short while. Yoga will help make a positive change in your life. There are many things that yoga can help you with like depression, many medical problems etc. Yoga is an on going treatment you have to stay with it to get anything out of it. You cannot do it today and accelerate to get the full benefits out of it.