The main foccus of our life should be on our self. . Millions lectures also can’t change the world but if we concentrate on our own self and those million lectures we try and listen for our own self for a virtuous life then it’s sure that we will achieve our goal and then one day millions would like to walk on our footsteps. It is really good to be kind and live for others . When we will leave even our body will also be here just the soul will go with all our good and bad karmas.