Your first name of Marvin has given you a quick, analytical mind. In your dealings with people you place great importance in living up to one's word. Although you are not demonstrative of your feelings in family relationships, you maintain a strong sense of loyalty. Any criticism from others causes you to retaliate cuttingly in self-defense. Once you have given your word and undertaken a commitment, you are completely steadfast in following through in spite of any regret or frustration you may later experience in doing so. However you must beware of driving yourself to exhaustion as a substitute for relaxation. However, independence, positivity and the urge for action and progress are such strong forces in your nature that you find it difficult to control them. Routine, monotony, and the responsibility of looking after details can have a similar effect. The effect of the nervous tension can appear in childhood as stuttering. In order to gain greater congeniality in your personal associations, you need to cultivate a more relaxed manner, greater generosity, understanding, and tolerance, and, above all, you need to avoid being too outspoken and self-opinionated.