I am failing many things in college, have debts to pay, work too often, get paid too little, and worst of all I've lost my best friend because I told her something I shouldn't have said. Of course, being in debt, failing in school and losing a friend can get anyone a little down. Whether you're in the midst of some massive misfortune or a massive depression is the real question.
Life seems meaningless or like nothing good is ever going to happen again.
You have a negative attitude a lot of the time, or it seems like you have no feelings. It's hard to make up your mind. You forget lots of things, and it's hard to concentrate. You get irritated often. Or you wake up really early most mornings and can't get back to sleep.