Fatigued...but still joyful!

This has been a long week, full of late nights at work. At this point I know I'm running on empty on my own strength. But I know God is with me, and His grace is the "premium" fuel that keeps me going. The auto experts say you should fill your car with whatever the car's manual recommends. My Corolla seems to run just fine on the regular, so to save money, I fill it with that. However, for our souls, we want to fill our tank with the best fuel possible---God is the premium fuel. Anything less, and we'll not be running at our best performance level and we'll suffer. So I hope to constantly keep my tank full of God's fuel...that's the only way for me to keep going even while I'm tired. Thank God for that! I have a tendency to fall into the running on my own strength, and that is like choosing to run on fumes. Not good.