Hi Congrad... for losing 30 lbs.
You REALLY need to have your mind set to quit. Other wise I believe you may not successed.
For my self I had to quit so it was a little easier.
I had tried quiting many times on my own, without any aid. I believe Zyban really works wonders. I know many people who use Zyban and it worked for them.
So when the time comes have that willpower, you can do it.
P.S . It also helps when there is no one else in your home smokes. If there is get them to quit at the same time as you.
Good luck.