Midlife has been defined as roughly between 40 and 60 Midlife has been defined as roughly between 40 and 60 Midlife has been defined as roughly between 40 and 60 Mid-Life Transition tidy little list midlife Elliot Jaques in 1965 Life Transitions middle age mid-life ‘midlife crises’ "Mid-Life." midlife Midlife has been defined as roughly between 40 and 60 midlife midlife