Fear

I am having an interview with a small consulting firm next week. I really want this position and I am making efforts. I have been spending hours to do some research about the company to understand their businesse model but it hasn't been easy. Even though I understand the job hunting is a long process and it takes time, I will probably be very disappointed if I won't be able to get this position. I used to be so confident with myself but somehow I lost it. Where and how did I lost it?