The Qualities

Cardinal
Fixed
Mutable

I tend to agree with all these qualities based on the people in my family (since I know them the most)...

My father is a pisces, a mutable sign... so it's not surprising why he tends to be the most open-minded in the family...

My mother is a taurus, a fixed sign... once she plans something, she'd really force things to get everything established. her plans always go the way she wanted them to be... and she usually changes her mind the least... but she's the sweetest mom I ever had...

My sister is a virgo, a mutable sign... she adapts very well to every environment she goes into... and she seems to take into account every perspective put into any kind of discussion... because of that, she seems to get to say the last words most of the time...

My brother is an aquarius, a fixed sign... no wonder, he can be very stubborn... it takes a lot before he finally changes his mind... but he's an air sign so he is also very carefree...

I am a virgo, a mutable sign... I often change my mind and I am open to almost any idea or philosophy out there... but I'm also an earth sign so once I understand something, that new lesson I just learned gets grounded and it will remain in my memory and in my heart for quite a long time...

Cardinal - Aries, Cancer, Libra, Capricorn
Fixed - Taurus, Leo, Scorpio, Aquarius
Mutable - Gemini, Virgo, Sagittarius, Pisces

Cardinal signs like to initiate things.

Fixed signs like to continue what was started.

Mutable signs adapt to the changes...