Sorrow can help you with inner growth because if you look into your feelings of loss, regret or longing; you will find that they are indicative of something even deeper like dealing with separation or the struggle with detachment from a loved one, or not having done something differently when you could have, and therefore once the opportunity is gone, regretting not taking a chance. By exploring instances of sorrow, you will find the true origin of that sorrow, as well as an opportunity to decide what you want to do about it.