The color black represents fear, the absence of light, and ignorance. It is also associated with death, pain, and sadness. When this color predominates in a dream, it means you are being brought down by pessimism and confusion. (See DESERT, MIDNIGHT, and DEATH)
Be a winner
As an athlete, you cannot easily perform your tasks or your routine if you lack sleep. Fight fatigue and insomnia by giving yourself some time to rest and sleep. A 10-hour sleep could be ideal to give your body the stamina it needs to face the day.
Sleeping can help with the overall well-being than avoiding irritability. A lack of sleep can easily contribute to depression, but having a good one could easily change your mood or alleviate your anxiety. With a good night's sleep, you'll surely have emotional stability and balance.