Doing good deeds and helping others can make people feel happier through the release of neurotransmitters like serotonin and dopamine. Acts of kindness and generosity trigger the largest increases in these "happiness chemicals" in the brain. Being generous or witnessing generosity can improve mood. Additionally, practicing generosity and gratitude, and spreading love can make a positive difference through karma. Successful businesses also benefit from having a social mission through attracting quality employees and customers who are willing to pay more to support ethical companies.