what's wrong with me?

been feeling down whenever i am alone..
i really don't understand myself sometimes..
i get this feeling as if i have a burden that's in my heart..
i feel like crying but there is nothing wrong with me
i just can't explain...
i don't like to talk much too lately..
idk..i am tired? can't be..
i just want to know why i am feeling like this
someone tell me...
i am really at a loss...
why isist i feel that
no one ever bother
no one ever cared
no one ever notice
no one will wait for me..
everyone just come and go
can't there be a permanent person in life?
there's like nothing to look forward alr..
life sucks but i know i should be grateful
to have a thanksgiving heart the fact that i was born with healthy body & a thinking mind..
sorry for such post but i need to say how i feel...
i will try to be more optimistic. REALLYY!