"Seek the kingdom of God above all else, and live righteously, and He will give you everything you need. So don't worry about tomorrow; for tomorrow will bring its own worries. Today's trouble is enough for today." (Matthew 6:34-35)
Go read this post at SteadyMom. Such a well-written reminder to keep our hearts and minds in the NOW and not shovel unnecessary worries (such as: however will I manage with a preschooler, toddler, and a newborn!) onto today.