"An interview is all about impressing your hiring manager and setting yourself apart from the other applicants," stated Ali from onewire. But the more you allow stress and worries slowly devour you in an interview, the larger the possibility you'll end up getting more mistakes answered in an interview, thus, giving out a negative impression in the process. One of the common mistakes an interviewee usually commits is when they talk negatively about their past employer.

It is not a big deal if your last boss that's rude, unappreciative of your efforts, or the one who committed something bad against you. Sharing that story with your hiring manager is still not impressive at all. Here are three reasons how bad mouthing can affect your interviewer's impression of you.

You Become a Negative Person

Saying bad things about your former employer makes you the petty one. This will make your hiring managers think that if you're willing to share your negative past issues at a job interview, then you might as well always complain and do the same if you will be asked to be a part of the team.

You May Become a Risk

Another negative impression that could leave in your hiring managers' mind is that you may be a detrimental of team's morale which can damage their brand and reputation in the market.

You Dissolve Accountability

"Complaining about your old boss raises questions about you being able to take responsibility for the part you played in the situation," according to Linkedin. It may leave him wondering about the other side of the story. And possibly might think negatively about you with all the hanging questions in his mind.

So What Should You Do?

So what would you answer if you were asked about why you left your old company if you previously had a negative feeling toward them? Chron tells you to answer the question simply with, "you had differing professional attitudes that were not conducive to a long-term relationship." This is an honest answer yet didn't show even an inch of being disrespectful toward your old boss and will surely be appreciated by your hiring manager.

Remember that you're now facing a new life now. So it's just right to leave negative feelings and memories behind. You will never succeed with negativity within you. So move on, take that great leap through your interview and share your positive heart to everyone.