When my nic level gets low I am a Bear!
When I quit "Cold Turkey" before... people have gone to the store and bought me smokes, "if I was going to be like that"!
It may have saved their lives, so that's a Good Thing!
Seriously, when I get cranky, I up my nic level and things usually level out. YMMV, but it's a thought.
ETA: This time of year (ie. suicide/heart attack season) has never been my cheeriest!
Please take comfort in the fact that this is a very stressful time of year for many people.
Relax, Enjoy! as best you can!