It is the subjective world that rules the objective. Change the subject, and the object is bound to change; purify youreslf, and the world is bound to be purified.
All the cruelty and torment of which the world is full is in fact merely the necessary result of the totality of the forms under which the will to live is objectified.
If we all could be a true friend to someone, praying and encouraging one person somehow, that's a first step in being part of making the world a better place.