Don't concern yourself with the faults of others. Use the scouring powder of wisdom to keep the rooms of your own mind bright and spotless. By your example, other persons will be inspired to do their own housecleaning.
Avoid a negative approach to life. Why gaze down the sewers when there is loveliness all around us? One may find some fault in even the greatest masterpieces of art, music, and literature. But isn't it better to enjoy their charm and glory? Life has a bright side and a dark side, for the world of relativity is composed of light and shadows. If you permit your thoughts to look only for the good in everything, then you absorb the quality of beauty.