Anyone having struggles with energy and sleep.

I have done sleep study, but I have been feeling fatigued a lot. Like almost everyday especially mentally. I don’t know if it’s stress or anxiety, but I tend to take naps and even could fall asleep while driving in the afternoon.

I did a sleep apnea test and the doc will check it out this month. I have so many desires to strive in life but I constantly feel tired and fatigued mentally. I also wake up during the night.

What should I do?