Here’s a serious advice. Even the nicest people have their limits. Don’t try to reach that point because the nicest people are also the scariest assholes when they’ve had enough.
If you want to make someone cry, make them think of every person who hurt them.
If you want to destroy someone, make them think of every person who they have hurt.
It doesn’t hurt because if you keep hurting the same part of you again and again and again, the nerve endings all die. And when that happens, that part of you goes numb. That’s why it doesn’t hurt. Don’t be proud of it.