Dr. Robert Emmons is a renowned psychologist who has made some research on gratitude. He is a psychologist and professor at the University of California. In one of his study, he had people writing down what they were genuinely grateful for daily.

One of his study found that happiness is in our genes and added that people who intent gratitude by keeping a gratitude journal or by being genuinely grateful for the minor things in their life would measure an increased happiness of 25%: ‘participants in the gratitude condition felt more joyful, enthusiastic, interested, attentive, energetic, excited, determined and strong…they reported sleeping better, had increased positive feelings and life satisfaction experiment’.