Shyness is a common trait that can occur at any age, including at 21 years old. Being shy means feeling nervous, self-conscious, or introverted in social situations. It is a normal part of human experience and does not necessarily indicate a problem. Some people are naturally more introverted, and for them, shyness may be less of an issue. However, for others, shyness can be a barrier to social interactions and can affect their ability to form relationships and pursue opportunities. There are many ways to cope with shyness, such as practicing social skills, setting small social goals, seeking therapy or counseling, and learning relaxation techniques. It is important to remember that everyone is different and there is no right or wrong way to be, and seeking help and support if shyness is impacting your daily life or well-being is always a good idea.