God grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference. – Reinhold Niebuhr
We get frustrated when we try to change the things we cannot change, we could even get depressed, sad or disillusioned. If however, we refuse to make effort to change what we can change, we suffer unnecessarily. It is therefore wisdom to know the difference between what we can change and what we cannot change.