Venting 2.5 weeks into college and it’s already started

[ManAboutTown]

I don't know. Exactly what the title says. I have vicious mood swings every day and am having the worst time of my life. Every moment is one of isolation and abject misery. I think about killing myself multiple times every hour. I know things will never improve but I have no prospects aside from this. If I quit then it's over. If I don't do well then it's over. I don't sleep anymore because I don't want to wake up. Everyone will tell me it will only get worse, so why should I live?