Out of the blue I've had really bad insomnia the last few days. Like 3 hours of sleep a night, and it's starting to freak me out because I don't cope well with no sleep. Feel like a zombie, can't focus or do anything, yet I don't really feel tired as much as wired out.  Trying to work out what could be causing this, nothing in my life has really changed, I'm not stressed or anything. My only current theory is that I've been going heavy with Leo's concentration technique recently, and made some pretty gains in my awareness. Could this be a side effect of my mind rewriting itself? If anyone has any insomnia tips would be much appreciated.