Oh boy yes, this has been my life for five years. It is sooooo frustrating and depressing. I honestly cannot be the person I was and want to be again since cancer treatment.
I can only empathise because I dont have a lot of tips to cope. What I find is that any bout of activity results in a rebound fatigue that leaves me needing to sleep for almost an entire day but the worst thing about it is the moods - I get cranky and teary exactly like a small child and I just cant take pleasure in anything. I find it really hard being a teacher because working with small children is exhausting which means that my job qualifies as tough enough to leave me in that condition. On holidays I feel so much better! The biggest thing I miss is keeping fit - but any attempt to do more than I currently do will result in fatigue, bad moods and usually, if its intense enough (say a spin class), I actually get sick.
My tips for coping are few but this is what I do
Supplement with a multi and omega 3's religiously
take HRT (makes a huge difference to my mood)
I take a supplement called Sam-e off and on - when I really need to power on, it gives me a lot of energy and improves mood incredibly but it becomes less effective over time so I need to take it off and on
I bother my doctor constantly over iron - I had an infusion a few years ago and my ferritin level was 157 after that, its 33 now. I consider losing that much iron a problem, my gp only cares if I dip below the reference range. I am currently supplementing iron even though I am menopausal because I have noticed hair loss and feeling cold and I have no wish to get to the state I was in when I had the infusion. I"ll take it for a few months, get my storage up and stop for a while kinda thing. I firmly believe you can feel the effects of low iron without being anemic, low ferritin can be a big problem, and doctors are not a lot of help
Check out your sleeping arrangment - we bought a new bed, a king size, and its made a huge difference. Its not as hot as our previous thick pillow top and my husband is half a room away from me and doesnt disturb me as much, I'm sleeping much much better
adjust your life where you can - much as it pains me, I cannot exercise every day and I cannot run like I could a few years ago. Also, depending on some financial arrangements that may or may not come to pass, I'm thinking of cutting back on work next year.
I did make a huge improvement a year or two back when I was diagnosed with a bacterial imbalance in my gut (by an integrative gp) and took a course of antibiotics to kill off the bad stuff.
When I'm working is like you say - work, go home, barely have the energy to get dinner together, go to bed at 8.30 to the disappointed/disapproving glare of your spouse, rinse and repat for five days. Friday night have a fight with spouse about being too tired to do anything at all bar lie comatose on couch. Saturdays, get up, snap, cry, grumble through food shopping and go back to bed for four or five hours. Sunday, feel OK. Living with others doesnt offer much in the way of help, only provides people who dont understand that you're not lazy and not just tired and makes you feel guilty because you're not much fun to be with/live with. Forget any sort of romantic life!
None of that may be of any help to you but I really sympathise with how you'e feeling. I've been able to discover no reason for it and nobody has anything to offer (gp, surgeon) but antidepressants or counselling because well, if a woman is complaining of feeling worn out and exhausted constantly, well she must be depressed right?