Earlier today, I was offered a position which I accepted. It is supposed to start in about a month.
I feel like I've made a huge mistake. Can I do anything about it without coming off as unappreciative to the company? Is it considered rude or inappropriate to change your mind when you've already accepted a job offer?
Edit: Thank you for the answers - you all helped me deal with my panic. As a result I'd called the HR and apologized explaining my reasons. She wasn't angry at all and proposed to send information about another position in their company with similar skills requirements. And it's a happy ending I suppose = )