What's the difference between thinking 'War' and thinking 'Peace'?
Between creation and destruction, the positive and the negative, the 'evil' and the 'good'?
I suggest the answer would have to to with an awareness of one's context, as a social human animal living where one lives at the present point on the path of history ('Good', for example, for whom? For me personally (in my social context), for my family? for the wider community, all humanity, the biosphere itself..?), an awareness for the obtention of which 'good' education and access to information helps but which ultimately, I reckon, depends on maintaining open channels of communication with the bottom of one's heart.
For verily, to revert to an earlier idiom, and from a non-contemporary, but close, account of the words of a self-defined 'Son of Man', the kingdom of heaven lies within you.
Btw, I dislike terms such as 'belief' (or blind faith) that are bandied about: I believe this, I believe that: What does this mean? It means "I'm not prepared to think about it any further". And it probably means you're using the language in an habitual manner with too little attention to accuracy of expression.