And what does your anxiety do? It does not empty tomorrow of its sorrows; but, oh, it empties today of its strength. It does not make you escape the evil, it makes you unfit to cope with it when it comes. It does not bless tomorrow, and it robs today. For every day has its own burden. Sufficient for each day is the evil which properly belongs to it. Do not add tomorrow's to today's. Do not drag the future into the present. The present has enough to do with its own proper concerns. We have always strength to bear the evil when it comes. We have not strength to bear the foreboding of it. As thy day, so thy strength shall be. In strict proportion to the existing exigencies will be the God-given power; but if you cram and condense today's sorrows by experience, and tomorrow's sorrows by anticipation, into the narrow round of the one twenty-four hours, there is no promise that as that day thy strength shall be! God gives us power to bear all the sorrows of His making; but He does not give us power to bear the sorrows of our own making, which the anticipation of sorrow most assuredly is.  ~Alexander MacLaren, Anxious Care