If we look at society and societal norms, a lot of weight is given to success when it comes to defining happiness.
If we see a person who is successful, it is often assumed that they are happy. On an existential level we should consider what it all means. In reality, we actually have no idea whether or not that person is either happy or successful; for a couple of reasons: First of all, we can only measure someone else’s success or happiness by what we know about them. Secondly, and more importantly, we can only measure someone else’s success or happiness by how we define success and happiness. There is really no way of knowing whether their measures are even similar to our own.