I think if your happiness is dependent upon obtaining a certain standard, financially or otherwise, that the people you associate yourself with maintain, and that lacking in any of those areas would make you feel inadequate, you are increasing your chances of feeling unhappy. On the flip side, you may use this as motivation to succeed, which can be a healthy thing.
However, a person who can feel happy, independent of any standard that may be defined by others as necessary for happiness, will have a much easier time being happy.