Pain is either deliberate or accidental. If deliberate, it is through the evil-mindedness of other; if accidental, then it is due to our own unpurified minds. "How?," do you ask in surprise. The accidents that befall you occured because of your own nature; you attract certain types of event to yourself and lo! the accident happens.
If you are a dare-devil, you will be falling and hurting yourself from climbing dangerous places. If you are absent minded, you become the victim of your own carelessness.