Look OP im sorry, but you should really thnk what lead you to do this.
I worked for a major company for a number of years, and in my first week I had 0 to do. So I focused on learning about the processes they had in place, and even wrote a bunch of them down, since they were not official.
Its weird to me that your first response to this situation was to go up to your boss, accuse the company of not being a fit for you for them not being organized enough, and just quit. I never heard of anything like this before. Instead of initiative, you decided the place didnt fit your needs properly, so fuck it im out.
And now you are talking about killing yourself, saying corporate life is not for you, etc... I wonder how old you are?
Please listen to everyone here and reassess what do you want to do, ina general sense.