Erich Fromm, writing about different views on maturity and mental health in his book The Sane Society, has this to say about the popular view in the West:
The concept of “maturity” and “mental health” in this view, corresponds to the desirable attitude of a worker or employee in industry or business. To give one example for this adjustment concept, I take a definition by Dr. Strecker, on emotional maturity. “I define maturity,” he says, “as the ability to stick to a job, the capacity to give more on any job than is asked for, reliability, persistence to carry out a plan regardless of the difficulties, the ability to work with other people under organization and authority, the ability to make decisions, a will to life, flexibility, independence, and tolerance.” It is quite clear that what Strecker here describes as maturity are the virtues of a good worker, employee or soldier in the big social organisations of our time; they are qualities which are usually mentioned in advertisements for a junior executive. To him and many others who think like him, maturity is the same as adjustment to our society, without ever raising the question whether this adjustment is to a healthy or a pathological way of conducting one’s life.