What does this quote mean The things which hurt instruct?

THE THINGS WHICH HURT INSTRUCT is a quote that can be taken however you want..to me it has meaning and that is why i got it tattood on my foot..which was very painful. but anyways it means that the things which hurt you ,someone, or your life "instruct" you do differently..or avoid that situation that causes you pain. people learn from mistakes..also you learn from whats hurt you. THE THINGS WHICH HURT INSTRUCT is a quote that can be taken however you want..to me it has meaning and that is why i got it tattood on my foot..which was very painful. but anyways it means that the things which hurt you ,someone, or your life "instruct" you do differently..or avoid that situation that causes you pain. people learn from mistakes..also you learn from whats hurt you. THE THINGS WHICH HURT INSTRUCT is a quote that can be taken however you want..to me it has meaning and that is why i got it tattood on my foot..which was very painful. but anyways it means that the things which hurt you ,someone, or your life "instruct" you do differently..or avoid that situation that causes you pain. people learn from mistakes..also you learn from whats hurt you.