okay, firstly, ring the NHS quitline - 0800 169 0169 or have a look here and see if there is a support group in your area.
When I gave up, I used the service and it was absolutely invaluable, there is no way I would have had the will power to do it on my own.
One of the best things is that they go through all the different medications available, talk about side effects, and they help you work out what is best for you. Out of my group, nobody opted for zyban because the side effects seeemed so awful, but between the patches, gum and the fake fags you can get, we all managed to quit.
It sounds like you have really made up your mind to give up this time, so well done.
You need to talk to your partner as well and explain that it is likely that you will be a moody cow for a few weeks and he is to support you, it is a good thing.
All the side effects of giving up smoking do stop.
Good luck.
If you need virtual support, feel free to find me on here, I'm around most days