"Do life and death really mean so little to you? By disregarding your own life like this, where do you think you leave your parents? You've never considered how much your family suffers, always acting solely for your own selfish desires, doing whatever you want to do. That's your true intention, isn't it? You've never thought about how much pain this will cause everyone!
One shouldn't be too self-centered. Lack of self-control isn't a good thing for anyone, nor does it lead to good outcomes. With a single cut, you end your own life, but those who suffer are still alive. They are in agony over your departure because they care about you, they value you as much as their own lives. Have you really never considered how much your actions would hurt your loved ones, how much pain they would feel?
You think that by dying, you've ended it all, but you've forgotten how much pain those who are still alive will endure."