Most people with depression can be helped with treatment. But, most depressed people never get the help they need. And, when depression isn't treated, it can get worse, last longer, and prevent you from getting the most out of your life. Remember, you're only a teenager once. You feel sad or cry a lot and it doesn't go away.
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.