service to self causes spiritual entropy, service to others increases intelligent infinity and additionally benefits self.
Said differently - when we are in service to others we increase the vibration of the collective consciousness and benefit from this in ourselves as well, spiritually AND physically. When we are only in service to self at the expense of others our spiritual AND physical bodies suffer.
Love will always win over Dark as it exponentially multiples in the ripple affect. Dark eats itself like a disease.
Simply - don't worry, be happy. and loving.