Arnall also says, in a press release commissioned by Wall's ice cream, that he has calculated the happiest day of the yearâin 2005, 24 June, in 2006, 23 June, in 2008, 20 June in 2009, 19 June, and in 2010, 18 June. So far, this date has fallen close to Midsummer in the Northern Hemisphere (June 21 to 24).
Midlife crisis is a term first coined by Elliott Jaques referring to a critical phase in human development during the forties to early sixties, based on the character of change points, or periods of transition. The period is said to vary among individuals and between men and women.
Identity crisis. In psychology, the term identity crisis (coined by psychologist Erik Erikson) means  the failure to achieve ego identity during adolescence. The stage of psychosocial development in which identity crisis may occur is called the Identity Cohesion vs. Role Confusion. During this stage, adolescents are faced with physical growth, sexual maturity, and integrating ideas of themselves and about what others think of them.