I'm surrounded by people who have a "thing". That "thing" that really sums up who they are, what they're passionate about, what gets them out of bed in the morning. And I don't have one.
There are many reasons why people may not have a degree nowadays, whether it was by choice or through circumstances such as illness or other responsibilities or life events that took precedence.
Work and work-based stress can cause or exacerbate mental health issues, however, there are things that employers can do to help alleviate issues and support their staff where needed.