A bottle of 10yr+ aged Port always does it for me.
Some nice Scotch works as well.
Not that you want to hear it, but in the book "On Combat" Grossman talks about sleep deprevation and what it can do to your body. One example is the Russian veterans of Stalingrad. After 6 months of constant fighting, and getting very little 'light' sleep whenever they could, the average age of the survivors was something like 45 years old (dying of health related problems)- When the rest of the country was living well into their 70s.
And try not getting hit by any more cars. . . that might help.