As a wise person once said, everybody has mental health. That much might be true, but unfortunately, not everybody has good mental health. Before we are born, we are entered into the mental health genetic lottery, and while some of us come out unscathed, those with a sweet, sweet history of mental illness will likely come out extremely scathed.
The worst part about having mental health issues is that everybody thinks they're experts on how to help you. People roll out lethargic advice all the time about how not to be sad all the time, and it can be quite unpleasant. You might ask yourself, "What do mere happy rubes know about the suffering of the depressed?" That is until you go to an actual therapist who also tells you to spend more time in the sun and practice mindfulness. Go figure; maybe those rubes were onto something after all. Working on your mental health is very difficult, but helping yourself alleviate your depression is worth it in the end.