Out of Control

Out of sudden...i cried while chatting with my friends this morning...
I felt so depress and down...
I got no idea about it....
Not because of something...
Not because of result....
Not because of him....

I just don't know why,my tears dropped out automatically...
because of pressure? NO way...I feel so relax now...at least,the troubles that i facing now wont affect my emotion...

I know,there are some reason..but what is it? I really dont know...and dont wanna know too....