Dr. Barbara Fredrickson and her colleagues have suggested that people should build on a daily diet of positive emotions to ensure increased levels of life satisfaction.
"This study shows that if happiness is something you want out of life, then focusing daily on the small moments and cultivating positive emotions is the way to go," she said.
She added: "Those small moments let positive emotions blossom, and that helps us become more open. That openness then helps us build resources that can help us rebound better from adversity and stress, ward off depression and continue to grow."
The month long study involved 86 participants, who were asked to submit daily "emotion reports", rather than answering general questions like, "Over the last few months, how much joy did you feel?"
"Getting those daily reports helped us gather more accurate recollections of feelings and allowed us to capture emotional ups and downs," said Fredrickson.
She said that building up a daily diet of positive emotions does not require banishing negative emotions, and the study helps to show that to be happy, people do not need to adopt a "Pollyanna-ish" approach and deny the upsetting aspects of life.
"The levels of positive emotions that produced good benefits weren't extreme. Participants with average and stable levels of positive emotions still showed growth in resilience even when their days included negative emotions," said Fredrickson.
She suggested that one should focus on the "micro-moments" that can help unlock one positive emotion here or there.
"A lot of times we get so wrapped up in thinking about the future and the past that we are blind to the goodness we are steeped in already, whether it's the beauty outside the window or the kind things that people are doing for you," she said.
She added: "The better approach is to be open and flexible, to be appreciative of whatever good you do find in your daily circumstances, rather than focusing on bigger questions, such as 'Will I be happy if I move to California?' or 'Will I be happy if I get married?'"
The study, titled 'Happiness Unpacked: Positive Emotions Increase Life Satisfaction by Building Resilience', has been published in the journal Emotion.