lack of confidence is the main factor that causes shyness or inability of a person to speak infront of many people but there are a lot of factors as well such as traumatic experiences and emotional and social issues. example: if a person is a victim of public shaming, body shaming or just a simple verbal pre judgement, simple words of insult can affect a person's behavior making them less productive, attentive, and have a complete decline in their sense of participation. Let me share an experience of mine.. this was back in my childhood days i was an intelligent child back in the day ( not being boastful or something ) but a lot things of happened to me that totally shattered my confidence first is failure ( i failed a spelling bee contest in my pre school ) ever since i refuse to join any quiz bee or spelling bees even though i was the most qualified in the class, second is getting laughed at i have a little bit of phobia when people are looking at me and laugh at the same time ( even though they are not talking about me ) or even when im reciting when someone laughs for some reason i lose focus and end up stuttering, lastly i am afraid of making mistakes because people might judge me. Years passed and i get over it but sometimes it's still there.. the damage has been done and it cannot be undone so let this be a lesson to those people to choose their words wisely and stop pre judgement it might not be obvious but a simple word of insult may not seem to do something bad to a person but in reality an insult that is way too offensive hurts more than a fractured arm.
Isisingit ko din naging mahiyain din ako kasi ang taba taba ko pero nag gym ako para mabigyan ang sarili ko ng self confidence to further enhance myself to become a better person.