There may not be a mid-life crisis after all. A new study claims that we’re happy at 40 than we ever were at 18, adding that the happiness curve rises with age. Previous theories claimed happiness was like a U-shape journey: it started declining from age 20, reaching its lowest point somewhere between 40 and 60 years of age. From that point on, it would rise again. But the study now refutes that idea, saying that people are the happiest in the married years and when in better physical health.