Let's face it, nothing is perfect. There will always be gripes or issues about previous companies, bosses, co-workers, team members, and most everyone you will encounter. While these complaints may strongly factor into your job hunt, they will most probably not be the only reasons. Also, you may be tempted to use these complaints and negative incidents as examples for situational questions, but resist the urge and take a more objective approach. The interviewer may be assessing how you are able to deal with other people or may be thinking of how you would represent the company if you are hired.

Badmouthing is a sign of immaturity; if your previous experience was not a good one, there are better outlets and instances to gripe about it than a job interview. Focus on your positive reasons for leaving and downplay the negative ones: for instance, instead of saying the pay was terrible and you were being overworked in your previous company, say that you felt ready to take on greater challenges and grow professionally.