There are three basic “Qualities” in astrology, and they refer to a person’s basic style of coping with situations in life. These qualities are:
Cardinal: Aries, Cancer, Libra, Capricorn. The person copes with situations by changing the situation. They see opportunities and are skilled at taking constructive action.
Fixed: Taurus, Leo, Scorpio, Aquarius. The person copes with situations by hanging in there. They intuitively understand that if they wait long enough, the situation itself will change. They can be both loyal and stubborn, and have tremendous inner strength to endure situation.
Mutable: Gemini, Virgo, Sagittarius, Pisces. The person copes with situations by changing themselves … either their style or their needs. This gives them great flexibility and adaptability, but also changeability, uncertainty, and a tendency to worry and chew things over too much while trying to decide which way to change themselves.