Its even more confusing if you consider the fact that different calculations in astrology, for e.g. vedic astrology (also called Jyotisha) which we use in our reports will give you yet another zodiac sign for your date of birth.
But its also important to understand that apart from Sun, there are other planets too which significantly influence our lives.
Ascendant, Sun and Moon are absolutely important points in astrology. Read about them and their conditions and this will reveal a lot more dimensions to your personality and possible solutions.
We make use of vedic astrology in our reports because its a very comprehensive system with lots of techniques to interpret a birth chart and also offers great remedies and solutions to our problems.