"do you possess any of the qualities of your astrological sign?"
Hell yes.
My Sun and Moon signs are Aries. I have more of the qualities of it than I lack. Especially in the independent/stubborn/passionate departments. Below is a copy/paste of the chart I ran.
Sun is in 27 Degrees Aries.
By nature, you are very energetic and high-spirited. You are fiercely independent -- you must be first in everything you do, and you enjoy taking risks. You are the one who will rush in where angels fear to tread. Quite brilliant at initiating new projects, you are terrible at following them through to completion. You are an enthusiastic leader but you tend to be a reluctant follower. Often you are quick to anger, but you usually recover just as fast, regretting later things you said when you were upset. One of your best traits is that you are simple and direct, blunt and honest -- just be careful you do not hurt others' feelings. Your need to be competitive at all costs may provoke resistance from others, but, as long as you maintain your usual Sunny good humor, this should not prove to be a major problem for you.
Moon is in 19 Degrees Aries.
High-spirited and courageous, you are a fighter when your emotions are aroused. The degree of force and drive that you can bring to any effort sometimes surprises others. You have hair-trigger reactions to specific stimuli and tend to "let it all hang out." You sometimes act before you think and do things on the spur of the moment, and that sometimes gets you into trouble. Your moods change quickly -- you have quite a temper, but you don't hold grudges. Very independent, with an extremely strong and forceful personality, you are known for being impulsive, careless, reckless, foolhardy, rash and daring.