Hi, it's from 2013 but came across an article of a study which showed people had better overall happiness when they allowed themselves to feel angry when needed. http://greatergood.berkeley.edu/article/item/when_getting_angry_makes_you_happy (When Getting Angry Makes You Happy) From the article- What is surprising, though, is that when revving up for a confrontation, only those participants who chose to feel angry in the moment showed greater psychological health and well-being in general. They reported greater satisfaction with life, better grades, and a stronger network of social support. Those who preferred to feel happy pre-argument, meanwhile, showed none of the same rewards, reporting lower overall psychological well-being. The pursuit of happiness, it seems, is not always linked to greater well-being. At the same time, people who were simply angrier in general showed lower psychological well-being. This study suggests that we might not always be better off trying to get into a good mood. It is appropriate, healthy, and even useful to feel angry when competing or fighting with others, though it is not good for our overall well-being to feel anger across all situations. Then, there is a video on constructive anger at the end.