Positivity means the will and courage to go ahead with life inspire of having an inkling of what lies ahead. The willingness to not look at the bad and concentrate on the good. It's that positivity that has kept a nation of 1+ billion surviving despite hardships and hopelessness. It is very very important to not focus on the bad. Somebody quoted recently a film dialogue - "One who has hope will survive even with cancer, one who has unbounded fear will die even with an ulcer". Positivity does not mean inaction, it means putting that 1 step forward however small and insignificant it may be. Faith helps in such matters, faith gives the courage to do right despite the circumstances.