lucky?

sometimes,
i really feel lucky that i no need to face those problems what my friends have to face
but when see their sad face
i hope that i am the one who face those problems but not them.
but sometimes,
i got to face those problems that other people don't have to face
what's my feeling?
do they know?
i think not.
when i was sad or angry,
do they think before what reason have made me sad or angry?
i know some of them they may think of that
but some of them just think that i am so weak
what problem i had face is almost people couldn't face it.
the difficulty of it,they will never know.
so,how lucky they are,
they should appreciate it.