It is scientifically proven to help others produce emotional wellbeing and improves our physical and mental health. Consider a Buddhist meditation mode, based on compassion and helping others to greatly improve our mood and our mind works.
A study conducted by epidemiologist James House, University of Michigan about 2700 social volunteers, concluded with surprising result that people who perform altruistic activities are healthier and live longer than the rest. Other several scientific studies determine that develop voluntary work reduces stress, chronic pain and insomnia.