By now, we have established that PhD students (and academics in general) seem to be at a higher risk to develop mental health problems like depression or chronic stress. But, how can we know if we have one of these mental health problems, right here, right now? In this post, co-authored with colleague, friend and therapist Paula Odriozola-González, we go over a few basic concepts of psychopathology, and propose criteria and simple practices to help separate internal experiences that we all go through at one time or another, from the more serious stuff.