The difficulty in life is to know on what we ought to concentrate. The whole art of life, I sometimes think, is the art of knowing what to leave out, what to ignore, what to put on one side. How prone we are to dissipate our energies and to waste our time by forgetting what is vital and giving ourselves to second and third rate issues. Now, says Paul, here you are in the Christian life, you are concerned about difficulties, about oppositions and about the contradictions of life. What you need is just this: the power to concentrate on that which is vital, to leave out everything else, and to keep steadily to the one thing that matters.The Life of Joy: Philippians, vol. 1, pp. 54-55.
HT: David Sunday