I have a problem with sleep and tiredness, which I reckon is related to my AS, but indirectly.
Firstly: when I go to bed I can't stop mulling over the problems I had in the day and how I should have dealt with them better. Then I worry about the problems coming up the next day and how best to deal with those. This means I avoid going to bed early, so that I am so tired that I won't lie awake worrying.
Secondly, and related to the problems worrying about the next day: I hate actually going to sleep because I know that it means the next day is inevitably going to turn up sooner rather than later. So again, however illogical it is, I put off going to bed, because it seems to push the next day further into the future.
Thirdly: if I don't go to bed later I never get time to do what I want to do, what with household chores, kids not going to bed etc.
I know the whole thing is illogical as I end up in a vicious circle: Go to bed late, get more tired, cope less well because I'm too tired, get stressed, worry too much, not want to go to bed, go to bed late ... etc etc.
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Any fool can cope with a crisis. The art is in dealing with the crap you get everyday.