Like the God, grant me the serenity prayer, God, I pray that with the help of the Holy Spirit who lives in me, I can guard the minutes + hours you've given me. I pray for self-discipline. And I pray that you would do more with my minutes + hours than I, alone can via Holy Bible's 2nd Timothy 1:7. Web keyword search: daily christian mantra for self discipline - https://www.google.com/search?q=daily+christian+mantra+for+self+discipline&source=hp