im alive!!!

how do we identify that a person is an intelligent one?
that's the stupid question to my self...
eversince i find ways on how to change my self
on how to act in a right way,how to deal with the people around me..
because i really felt that they don't like me not in a words but the way they treat me even in a simple way..
im not Pessismist nor optimistic..
my life is unpredictable..do i act like this and like that
is this what we called a moody?
but i don't considered my self like that..