A Christian is one who has God as his Father in heaven. The anxiety that dreads an evil thing on the morrow is nothing but unbelief.
When the morrow comes, the evil may not be there; if it comes, God will be there too. He may allow us to taste what it is to indulge our own wills; but, if our souls are subject to Him, how often the dreaded evil never appears. When the heart bows to the will of God about some sorrow that we dread, how often the sorrow is taken away; and the Lord meets us with unexpected kindness and goodness.
He is able to make even the sorrow to be all blessing. Whatever be His will, it is good. "Sufficient unto the day is the evil thereof." Matt. 6:34.