The A.A. emphasis on personal inventory is heavy because a great many of us have never really acquired the habit of accurate self-appraisal.
Once this healthy practice has become a habit, it will prove so interesting and profitable that the time it takes won't be missed. For these minutes and often hours spent in self-examination are bound to make all the other hours of our day better and happier. At length, our inventories become a necessity of everyday living, rather than something unusual or set apart.
TWELVE AND TWELVE, pp. 89-90