/This is how it works. You think you can handle it. But then, the burden gets too heavy to bear. So you just collapse under the pressure. And people wonder what happened to you "all of a sudden"/ This is supeisingly relatable for me
Self-harm is often a way of coping with painful and difficult feelings and distress. Someone may harm themselves because they feel overwhelmed and don't know how else to deal with things. It's usually a very private issue.