With such a topic so broad we truly try to cover the basics from all angles in this group. Nothing too big or too small. Nutrition is as significant if not more as exercise is to reaching your goals so learn all you can.
depends on the rules that make you tick.. Look at what might need adjusting- here's some ideas from an ex depressive insomniac:
training of an evening is NOT helping? or opposite is true?
eating carbs of an evening gives you the energy you least want?
cheese does keep you awake- it's a fact not a choice! Avoid late dairy produce anyway.
napping during the day? watching t.v. in bed till late? or other habit that isn't condusive to letting your body know that a bed means sleep?
protein drink before bed time is best to be casein based...
exercise does elavate your mood and energy levels anyway so you will need to assist yourself to attune to this new life.
activity has made your mind more active and there are 'worries' that stop you forgetting them? Set aside a worry hour to address what you can deal with- pidgeon hole what you cant until tomoz....
Diet wise, you are not getting the nutrients you need early enough? So you tend to have more calories/carbs/ energy foods/sugar in the last 4/5 hours before bed, thus leading to vigorous energy levels that you can't sleep on- rearrange your diet or see the missus and revitalise the recapture of your youth.
Try valerian or a helth food supplement for stress/sleep.. I've been using usa internet for melatonin (sleep and it works)and also dhea- keto 7 but both do jack for me!
best of luck and hope some/one of my ideas fit the bill and gives you restfull sleep..