Struggle through it bro, it's purely a mind over matter deal that requires you to understand that quitting anything you have done for 20+ years is tough. It just takes time for things to seem right again.
I know what you are going through, never gave up smoking, but I gave up a 12 year I.V drug habit cold turkey 8 years ago. Talk about the shakes, spent 3 nights in the hospital and a little bit of time in the loon ward over that ordeal.