How emotionally mature are you? There are plenty of signs of emotional maturity and it is an important to work on emotional maturity because it leaves you more relaxed and better able to handle the stresses of life. It also is a good way to deal with the excess feelings you have about things other people do. Emotionally maturity also helps us handle things like adults. Too many people will get stuck handling things the same way they did when they were kids and that has pretty obvious diminishing utility.
In this video from The School of Life, they tell you how to test your emotional maturity and increase it.