Do not catch hold of isolated ideas and make them a test, criticizing others whose practice may not agree with your opinion; but study the subject broadly and deeply, and seek to bring your own ideas and practices into perfect harmony with the principles of true Christian temperance. CH 451.1
There are many who try to correct the lives of others by attacking what they regard as wrong habits. They go to those whom they think in error and point out their defects, but do not seek to direct the mind to true principles. Such a course often comes far short of securing the desired results. When we make it evident that we are trying to correct others, we too often arouse their combativeness and do more harm than good. And there is danger to the reprover also. He who takes it upon himself to correct others is likely to cultivate a habit of faultfinding, and soon his whole interest will be in picking flaws and finding defects. Do not watch others, to pick at their faults or expose their errors. Educate them to better habits by the power of your own example.... CH 451.2