The Sun in Astrology is the most basic form the world is introduced to. It is important to realize that our Sun signs represent our will, ego, and is mostly aligned with masculine energy. It is also believed that the woman tends to relate a lot more to her Moon sign. (Unless she is a Pisces, Scorpio, Gemini, or Sagittarius, which are super-charged Sun signs.) The Sun sign shouldn’t be used to describe individuals as a whole. If you want a more in depth astrological reading, you should look to the entire birth chart for other planetary/asteroid positions and aspects.
As an Aries Sun sign, you appear low key, assertive, and sure of yourself. You coin the phrase, “Actions speak louder than words.” Your will is that you live life to the fullest and that you make sure to get things done. You are practical, full of life, though quiet, are resilient when challenged but you never look for a fight and you never enter a competition to lose. In fact, you are very competitive when the time calls for it. You can come across as flighty and fickle sometimes, and brutally honest to a fault. Aries, you have a great grip on the reality of things and if you learn to soften your blunt and direct approach, you could help many, if you so chose.