There are many things that can cause an interview to go awry, however, there a few critical things that can end an interview rather abruptly.

The number one thing you can do to ruin a great interview is:

1) BEING LATE!
2) Not being prepared
3) Not being dressed professionally
4) Not making good eye-contact
5) Interrupting the interviewer

Avoiding these 5 things will get you on your way to acing your next interview.