"Whether you have five minutes to relax or a year to focus on building lasting habits, here are 16 scientifically-backed ways to boost your happiness levels.
Smile. A 2011 study showed that thinking about something positive that makes you smile can actually make you happier (fake smiles don't do the trick), while 2003 Clark University research found that smiling activates positive memories.
Go for a run. Physical activity boosts the brain's release of endorphins, feel-good neurotransmitters that can improve mood and well-being.
Pray. Spirituality and religious involvement is linked with greater well-being and happiness, according to a review of more than 300 studies on the connection between spirituality and health, while prayer is thought to relieve stress.
Laugh. In addition to relieving stress, laughter can boost mood and reduce symptoms of anxiety and depression.
Go for a stroll in the park. There are many health benefits to spending time in nature, including, perhaps, increased well-being. One UK study showed that subjects were significantly happier when in natural environments as compared to when they were in urban environments.
Perform an act of kindness. Do something nice for someone else today -- it could make you happier, according to University of California research."