It is difficult to determine how much money someone would need to be happy in Arizona, as different people have different definitions of happiness and different financial needs. Some people may be able to find happiness living on a relatively small budget, while others may require a higher income in order to be satisfied. In addition, the cost of living in Arizona can vary depending on where you live in the state and what your lifestyle is like. That being said, it is generally recommended to have a solid financial foundation and enough income to cover your basic expenses and save for the future.