I invested half of my saving ($25,000) into ETH when it was $725. ETH has now plunged to $459. I am very worried I will keep losing money and I fear for the worst. I want to go kill myself 
I just hope that you are not serious, because if you are, I would suggest to cash out and stay away of crypto trading and investing. You cannot have so bad mood, jest because your investment drop %35.