HELP!!!

Sometimes I am not happy
And yet I pretend to be
As not to defend anyone.
I would not expect my misery
to ruin anyone Else's day.
I become so lonely and still
I wont accept any phone calls.
I feel I need help
but not knowing whats wrong.
Yesterday things seemed o.k.
So what happened to today.I refuse to waste my tears
so i smile with no complaints.
I may be happy for a while
When I empty my mind
I pretend and forget
about the heart that was once mine.