Top 10 things not to say in an interview

2. “My old boss was an idiot”
Never speak badly of your previous employer. Not only is it unprofessional, but it will also reflect poorly on you. This sort of phrase will give off the wrong impression and lead interviewers to think you’re difficult to manage.

If asked why you’re leaving your current position, focus on your ambitions, how this job will help you get to where you need to be, and what elements of the job excite you.