Like everyone has said, things will change and they will get better but you need to help yourself.
Believe me, the longer you leave it the worse it will get and the harder it'll be to get out of!
In answer to your question, I'm not going to lie to you, because I know that when I was depressed, the last thing I wanted was people preaching to me about how good life is and how amazing it'll be when you get better.
The truth is that you'll always carry a little bit of it with you but like ACtheTroll said, therell be bad times but there'll be good times that outshine them a million times over.
You need to get help for this, because the hardest thing to realise with depression is you can't help yourself, it's impossible to get over this on your own. Even if you just make the first step, talk to your family or a friend, anyone you can trust.
Then just take it step by step from there as slowly as you want.