Changes in work performance are common among those struggling with emotional or psychological issues. You might feel disconnected from your job, according to Reidenberg, even if it used to make you happy. Aside from changes in concentration and attention, you might get negative feedback from managers or coworkers that the quality of your work is slipping. This could be a sign that it's time to talk to a professional.
"Adults spend most of their time at work," says Reidenberg. "So people who notice are those who have to compensate, just like in families.