For those with significant mental health or other problems, some kind of therapy for some time can be necessary.
But after a point, I believe that attention given to one’s ‘mental health’ is to your detriment.
When we focus on fixing our perceived problems, we inadvertently emphasise our issues in the mind, thus enlargening them. Instead, we must focus on our work, developing our skills, creating value in the world, and helping others.
That gets us out of our heads, away from our narcissistic self-obsession.
When we do this, we realize the mental wellness that was there all along.