Consult a sleep specialist or see your primary to get a referral to a sleep specialist. He or she might order a sleep study, which can now be done at home with a portable unit that is loaned to you. Or, if a sleep study doesn't seem to be indicated, you might be given Modafinil to regulate your sleep/wake cycle. My pdoc recommended it but right now, awaiting results of in-lab sleep study, since I have severe bipolar illness, along with several comorbidities related to poor sleep.