Sonja Lyubomirsky 
 * The How of Happiness with Sonja Lyubomirsky, PhD, at Happiness and Its Causes 2016 https://www.youtube.com/watch?v=F7JDbP_x8So EN EL MOMENTO 54.
 * Happiness Habits - with Sonja Lyubomirsky https://www.youtube.com/watch?v=qYmLTG03ZDo Professor Sonja Lyubomirsky - one of the world's leading Positive Psychology experts - shares the latest insights from her ground-breaking work on happiness. This was recorded as an Action for Happiness event on 3 September 2020