If you're fearful for tomorrow, you lose sight of the goal for today, and it makes today a double struggle, because you're carrying the cares of tomorrow as well as those of today. You cannot remedy tomorrow's difficulties today, so concerning yourself with them today is futile. Leave them for tomorrow, when they become the present and the challenge at hand. By doing that, you'll find that whatever it is you need to persevere through that day, it will be yours, for I always give you what you need to fight each battle. If you find that you don't have it in you to fight the next battle, perhaps it's because you're not in that battle yet and you need to stop fretting about it and face the obstacle that is in front of you now—not what awaits you up ahead.