A smile is contagious, but so too are negative expressions, attitudes, and body language. In fact, research shows negative emotions have a more lasting impact than positive ones. Poor attitudes can negatively affect job performance, decision-making, creativity, turnover, teamwork, negotiations, and leadership. The consequences of negative emotions root even deeper–negativity can even lead to a greater risk of health related problems, including heart disease. Before you get in a terrible mood about all of this negative banter, we’ve got tips and tricks for employees and employers to identify and quell negative feelings in the workplace. Read on for more research on negative attitudes and when and how you can take charge–from a simple coffee break to personalizing your work space.