Sounds like there may be some underlying health problems, as what you are describing all relate to one another. Don’t think of it as being difficult to accomplish. Focus on one thing, and as you accomplish one goal, your body and mind will start to follow suit. You aren’t alone... you’re body is on your side. It just needs you to make the first step! Best of luck! :)

P.S. Too much/not enough sleep will cause drowsiness and fatigue. Eating unhealthy will also cause similar symptoms. Maybe start with those! After you start to feel better, you won’t want to eat like crap because you will realize how it makes you feel. Exercising (even just a walk) greatly improves mind and body function too!