couldn't stop crying today...

i've been not good lately.
i knew there re so many people and there are varying opinions and character in the world!
sometimes we cant understand and hurt each other..

there is a senior in my work place and who works hard everyday..she is afraid that she gonna lose her job so she cant take off every time.

oneday my boss wanted me to design for a booklet but actually it was her work before.
u know it was my first work by myself. so i got nervous and also was excited at it.
and as i guessed she seemed not good too.
she doesn't wanna me to do it, so she let me be her assistant.
and she is always sarcastic. and i got mad at her.....but i know she is Senior, so i cant say anything to her and just have to follow her.
my boss told me"even if she said she wanna do it by herself, u should do it too. work by yourself. i wanna you to grow up. so do your best. ok? i know you can do it. dont fear."
but i dont think i cant do it, cuz she is here.
i dont wanna fight with her, so i dont say anything to her, but she tells me someting and makes me sad everyday. i know she envies me though she has more experience on the job than i.
i really know she is upset.
she is not strong person i know...so i should stand her telling me sarcasm now.
hope my boss knows about it.
i dont mean to slack working....