-my thought

I want to take a step out to volunteer myself in answering lecture's question and even my presentation. but my confidence always stops me. seriously, I don't want to collect dust!!!!!!!!!! (this is how my lecturer describe the ppl that never ask question in class) ^.^
but...~

this is the conversation 

my thought: I think I know the answer.
confidence: are u sure??
my thought: ya.. am I sure the answer that I go to say is correct....
confidence: think twice!!!

finally
my thought: you r right.... I not sure the answer....

so the result - I just sit there quietly....

because what??
i'm lack of confidence.... and think too much =.=
hahahaha