Every human being is bound to live in society and much as anyone wants to change society, no one has the power to do so. Then, what to do? Rather than complaining about problems, you simply have to think positively, even in negative situations. What is positive thinking? Positive thinking means having a positive mindset which is free from all negative emotions. The opinions of one who thinks positively are formed purely based on the reality of the situation, rather than through complaints or protests. Positive thinking is devoid of pride and prejudice. Positive thinking is reality-based thinking.

Source: Leading A Spiritual Life