Your first name of Yastil has given you a quick, analytical mind. You are happy and in good spirits as long as headway is being made, but as soon as you feel obstructed or your individuality and freedom of action are curtailed, you experience an intense nervous reaction in your solar plexus. You are creative, versatile, and imaginative. Any criticism from others causes you to retaliate cuttingly in self-defense. Moods of depression can result during which you become caustic and belligerent in your attitude toward everyone, especially to those in closest association with you. You feel happy as long as headway is being made, but as soon as you are obstructed or your individuality and freedom of action are restricted, you experience an intense nervous reaction. You expect as much from others in return but find, either through misunderstanding or lack of principle in others, you are often let down, leaving you feeling bitter and betrayed. In your dealings with people you place great importance in living up to one's word. Routine, monotony, and the responsibility of looking after details can have a similar effect on you, as you are a person who desires change, travel, and new experiences. The effect of the nervous tension can appear in childhood as stuttering.