Why so difficult...

Hmmm.... today i have mock interview in my class... I was study it for 2 week... but i am still not confident to do the interview....

I cannot speak in English in front of my lecturer... what to do... im very upset...

When i have to speak everything will gone... all lost... empty... i have nothing to talk....

even i already rote and practice but after that i forgot it...like i never do practice before... what happened..

I just can write and speak English in my heart... but cannot in front others... What my problem... why i always like that.... what to do... help me..