We have to be so careful as human beings not to crush one another with the things we say, even when we think we are being helpful. Because at the end of the day, our role is to love, support and encourage one another, not modify each other's behavior and pass judgment on one another.
… Each of us is responsible for one life only, and that is our own. Each of us is immeasurably far from being 'perfect as our heavenly Father is perfect' and the task of perfecting our own life and character is one that requires all our attention, our will- power and energy. If we allow our attention and energy to be taken up in efforts to keep others right and remedy their faults, we are wasting precious time. We are like ploughmen each of whom has his team to manage and his plough to direct, and in order to keep his furrow straight he must keep his eye on his goal and concentrate on his own task. If he looks to this side and that to see how Tom and Harry are getting on and to criticize their ploughing, then his own furrow will assuredly become crooked.
~ From a letter written on behalf of Shoghi Effendi
On no subject are the Baha'i teachings more emphatic than on the necessity to abstain from fault-finding, while being ever eager to discover and root out our own faults and overcome our own failings.
~ From a letter written on behalf of The Universal House of Justice