Not necessarily so. For many people, their Ascendant or Rising sign is the more obvious characteristic, or sometimes the Moon sign. Your Sun sign, rather, says more about the direction you should be moving in, so as to make the contribution to humanity you were born to make, and thus achieve a degree of personal fulfilment. Each of the twelve signs of the zodiac may be regarded as symbolising a particular quality or function that humanity needs in order to be complete. Remove one sign, and a vital quality is missing.
Every sign rules a part of the body, Virgo the intestines.
This provides a vital clue as to the function of Virgo within the whole of humanity. Think of what the intestines do. They take in energy in the form of food, and break it down into its constituent parts. Then they analyse the components and see how they can be made to be useful. Perhaps some will be combined with others, some will be stored for later use, and some will be eliminated as being useless.