Is it  all your effort that you got perfect teachers? No. Basically you have no choice. You do not get a chance to choose your teachers especially during your childhood.

A perfect, helpful, kind, intelligent teacher is a blessing in your life time. They not only teach you lessons but also teach you good and bads. That's why in some cultures they say both your spouse and teacher are as per your fate.

So, getting a good techer is your luck and nothing but the luck. How many of you are lucky to have good teachers? Those who were lucky to have good teachers may not realise this fact. But, those who did not get good teachers, may always realise this fact.