I quit smoking cold turkey once, just threw my half full pack away and didn't touch another cigarette for a year, but I was sick and in my worst flare that entire year. Then, I started smoking again and after maybe a month I was in full remission. I decided December of '06 to try it again and this time, instead of cold turkey I weened myself off... Like, "Today, I will have one cigarette on the way to work, one on break, and one after," after a few days of that I went one in the morning one at night, then just one at night, and then down to none. I'm almost at my year mark and while I did flare a bit and had to go back on prednisone, I feel I'm almost completely out of the flare and it wasn't nearly as bad as the first one. Sometimes I feel like giving up and starting again but when I really weigh it out, it's just not worth it. And I'm glad I don't smell like an ashtray all the time anymore ;)
Anyway, good luck! Don't let a flare discourage you, quitting smoking is the way to go and you can totally do it. If you do flare it will eventually go away, and you'll feel so much better in the end!
Female, 22, Ulcerative colitis (pancolitis) since 1999; GERD; gastritis; osteopenia in hip & lumbar region of spine from long term prednisone use
40 mg Citalopram (for depression/social anxiety)
Should also be on supplements and probiotics and other UC drugs but I'm just not good at taking pills...