One thing that can make giving up smoking very difficult is if you are around people that are smoking. It is the same as being on a diet and watching everyone eat chocolate cake.
If you can avoid being around smokers then this is the best thing to do. This will keep you away from some of the temptations. People who smoke tend to be generous and will probably offer you a cigarette and this could be a lot more tempting than when you want one at home, but you do not have one.
People tend to smoke outside most of the time, as it is banned from inside public buildings and so avoiding places where they might go to have a smoke could be wise. There are often little areas outside offices and pubs where people might go and so it is best to avoid these. If you know people that smoke inside their homes or cars, it could be worth not going there for a while. If you get too near to the smoke it could easily tempt you to go back to smoking again.
Obviously you cannot avoid people smoking forever, however much you might want to, you are always going to be in contact with people who smoke and so you will need to get used to it. But when you are finding cravings are really bad, it is best to avoid it if you can. Once you give up, you may find there is a pattern when cravings are at their worst, perhaps at a certain time of the day or when you are doing certain things. These will be the times to avoid being around smokers. There may not be any consistency to it though.
If you cannot avoid smokers then make sure that you have some mechanisms in place to cope if you find you get cravings. Whether you find that an electronic cigarette, some gum, lozenges or other things help, then have those with you to use if you need to.
Remember to stick to the recommended dose and if you are using several different things, make sure that you do not overdo it. Speak to your pharmacist or GP if you are not sure how much of each you can take.