When she smile, doesn't mean that she is happy.
When she smile, doesn't mean that she has no problems.
When she smile, doesn't mean that she live her life perfectly.
I have seen some people like that and
either we notice or not,
sometimes we live that life for some un-logical cause.
To those who life this life, I wish you
all the best and just remember one thing.
Allah is always with you and there is something is waiting for you =)