truth not the truth

I admit I am a very hyperactive person like all my friends knew...
But i don't now why yesterday I have a such a bad performance
yesterday my radio&dj lecturer ask us to introduce ourself..
I don't feel like want to introduce seriously ...
I was like...scared...
the surrounding make me felt very uncomfortable..
She asked me whether I am a shy person...
i am totally speechless...
she asked why I changed tutorial group...
for me the truth is always there
I don't have to keep tell evryone what happen..
which truth they wanna believe is up to them...
I don't wanna do anything or say anything..
it is so unnecessary...