Enjoying life by peace of mind or money??

In my opinion, if you are able to find the equilibrium between the need for more money and the peace of mind that is required to have happy life, than you will become one of the few that can describe their life as a happy one. I saw that people usually don't say that about their life, instead they use adjectives that describe the typo of work they are into. For example if they have the need for being successful, they will say the have a successful life.