You are obviously a bit of a loser. Shy people are a waste of space.
Ok so now I've got your attention.
Listen: mindspeak, internal dialogue, talking to yourself, or whatever you want to call it - really does work. How do I know this? Well, somebody showed me that for thirty-plus years I had been, without fully realising it, silently calling myself a loser etc on a daily space. In other words, I had a poor self image and was reinforcing this unknowingly with lots of self critical thoughts and so on.
I suddenly realised that, if this kind of negative self talk 'worked', i.e. had a negative impact on me, then the opposite must also be true. I could not have it both ways. Positivity must also breed positivity.
Therefore, every little positive comment made by myself, to myself, about myself, became an important little building block in my new found self esteem.
I still have my shy moments, but they are nothing compared to what they were, and continue to get less and less each day.
You are already on the road to high self esteem. Your posting shows maturity, self awareness and self compassion. A certain amount of shyness or self-consciousness is normal at your relatively young age, and even expected. And please note: it is certainly not unattractive. My fiancee is living proof of this.
Keep doing what you are doing, and remember that you are loved.