The behavior you described of being a "massive extrovert" when drunk but "extremely quiet and reserved" when sober could be influenced by a combination of factors, including your natural personality traits, social anxiety, and the effects of alcohol on inhibitions.
Natural personality traits: People have different innate tendencies when it comes to their social behavior. Some individuals are naturally more outgoing, talkative, and sociable (extroverts), while others are more reserved, introspective, and prefer solitary activities (introverts). These traits can influence how you behave in social situations, whether sober or under the influence of alcohol.
Social anxiety: Social anxiety is a common condition characterized by fear or anxiety about social interactions, which can lead to self-consciousness and discomfort in social settings. When sober, you may feel more inhibited due to this anxiety, leading to being quiet and reserved. However, alcohol can temporarily reduce feelings of anxiety, making you feel more relaxed and less self-conscious, which might result in more extroverted behavior.
Alcohol's effects on inhibitions: Alcohol is a central nervous system depressant that can affect brain function, particularly by lowering inhibitions. When you consume alcohol, it can dampen the parts of your brain responsible for self-control and judgment, leading to decreased restraint and an increase in extroverted behavior.
It's important to note that while alcohol may temporarily provide relief from social anxiety and allow for more extroverted behavior, relying on alcohol to become more social can have negative consequences in the long run. Drinking excessively or as a coping mechanism for social anxiety is not a healthy approach and can lead to dependence and other issues.
If you find that you struggle with social interactions while sober or experience significant social anxiety, it might be helpful to consider seeking support from a mental health professional. They can provide insights and coping strategies to help you feel more comfortable and confident in social situations without relying on alcohol. Additionally, understanding your own personality traits and accepting yourself for who you are can also play a crucial role in becoming more at ease in different social settings.