Here is one I found so insightful, useful and it was just for me!
"So I do not run aimlessly; I do not box as one beating the air. But I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified.
1 Corinthians 9:26,27
Sometimes we feel like we're running on a treadmill, getting nowhere, running aimlessly. As you step into today, consider discipline and control, and be intentional about where you're headed. Perhaps you don't have the strength to complete a marathon, but one step at a time, seek the Lord's grace, and draw from His reservoir of endurance. He will give you what you need to press forward. "