President Boyd K. Packer: I have learned that the best time to wrestle with major problems is early in the morning. Your mind is fresh and alert. The blackboard of your mind has been erased by a good night’s rest. The accumulated distractions of the day are not in your way. Your body has been rested also. That’s the time to think something through very carefully and to receive personal revelation. . . .
The Lord knew something when He directed in the Doctrine and Covenants, “Cease to sleep longer than is needful; retire to thy bed early, that ye may not be weary; arise early, that your bodies and your minds may be invigorated” (D&C 88:124). . . .
I counsel our children to do their critical studying in the early hours of the morning when they’re fresh and alert, rather than to fight the physical weariness and mental exhaustion at night. I’ve learned that the dictum “Early to bed, early to rise” is powerful. When under pressure—for instance, when I was preparing this talk—you wouldn’t find me burning the midnight oil. Much rather I’d be early to bed and getting up in the wee hours of the morning, when I could be close to Him who guides this work . . . you have great and powerful resources. You, through prayer, can solve your problems without endlessly going to those who are trying so hard to help others. (“Self Reliance,” BYU Speeches, March 2, 1975)