Vunerability

Now being a 19 year old and about to enter into my Sophomore year in college, I wonder if making oneself vulnerable ever gets any easier. I wonder if it is just me or if others in this world have the same problems. Sometimes I get the courage to say something that I would otherwise keep to myself, a thought that when put out into reality could be used against me or worse taken and hurt me, but then panic for however long it takes for a response. I don't know maybe it is a stupid fear that teenagers or shy people feel because they worry about what others think, or maybe that is just me. But for whatever reason it always takes me forever to get to the point where what I have to say or think or feel about something gets hushed till I'm comfortable with it. One of the best examples is probably in school/classes. In highschool it took me a couple of weeks to feel comfortable between the teacher and the students in my class before I decided that sharing my thoughts on something was important, and now in college it's no different. I still do the same thing only now it's probably worse, because classes are HUGE some with a hundred some students just doesn't make me feel comfortable with sharing my opinions. In addition to the size the classs is for a lot less weeks than a class in highschool so there goes that too. The sad thing is I do this with people around me too, I'll be afraid to share my feelings in fear of rejection or something thinking it's stupid or I don't know. So I guess what I'm hoping is that this annoying aspect will eventually cease or I get over worrying what someone else thinks and decide if they don't like it tooo bad cause this is how I am..hmm I dont know.