I'm 18 years old, and I have suffered a long term of depression but it was too quick to disappear but not like this, this depression isn't going anywhere, I have many complicated symptoms like headache, feeling sadness, failure, helpless, confused, angry ( I mean an overwhelming one) tired every single minute of my entire day, bored even things that I used to like, I have taken many tests but it's not helping, I want to know anything that can cure my depression. I also have memory problem, difficult concentration. I feel like there's no future for me again. please help.