What Is Midlife?

People are like wine - some turn to vinegar, but the best improve with age.
-Pope John XXIII

According to Psychology Today, a "midlife transition" is a natural stage that happens to many of us at some point (usually at age 40, give or take 20 years), and such a midlife crisis, can include: boredom, self questioning, daydreaming, irritability, unexpected anger, compulsive behavior and greatly decreased ambition.