This article on Insomnia in the Personal Journal section of the Wall Street Journal is interesting!

Having experienced several bouts of severe insomnia in my past I found it informative to find out something I ready knew: that although insomnia is painful emotionally and can lead to physical exhaustion and other challenges but one’s cognitive abilities remain largely intact. In other words, though you may feel less intelligent or capable as a result of much less sleep, in reality, you can function well regardless. I did. The challenge, of course, is to address the underlying cause and dynamics before one’s health and well-being is affected. For me, this was complex and multifaceted. For some, it may be less so: cut out substances that interfere with sleep like caffeine and change your job/ relationship or whatever is truly not working in your life. A really good coach or therapist might be helpful too. Sleeping pills are problematic and a slippery slope so be careful!