12 ways you're sabotaging your career without even realizing

We all have bad habits. Sometimes we we're not even aware of them, or the effect they have on our lives or careers.

"In fact, many of us have habits that sabotage our relationships, work flow, productivity, and bottom line results," says Sylvia Hepler, a career development specialist and author of "Learning Leadership Through Loss." "They can also sabotage our professional future."

Here are 12 common bad habits and behaviors that can seriously hurt your career: