Insomnia again, really?

Seriously wondering if I'm having withdrawals from something though I haven't made any recent dietary changes. I guess getting back on sleep meds is in my near future. This was the longest stretch for me...more than a year. If only I could figure out what is keeping me awake. Maybe I'm pushing myself by avoiding pain meds and letting my tolerance for pain exceed all limits? One of these days I'm going to give myself a break. Next time my doctor questions me about dealing with the pain, I really should stop thinking any amount of pain is tolerable. This is ridiculous.