Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day [is] the evil thereof.
Just dealing with the things that I am supposed to be doing right now, is enough trouble to worry about for one day. We shouldn't get all stressed out about things that seem like terrible burdens or impossible dilemmas for some day down the road.
If we just trust in the Lord and do what He wants, He is able to (and will) cause all those things just to work themselves out so that we don't even have to worry about them. It is true that as long as we are in Christ, we do not really have anything to worry about or be afraid of . . . and I think that is encouraging.