I smoked for 20 years and made multiple attempts to quit during those last few years. What finally worked for me was finding a support site like this one, reading up and educating myself on nicotine addiction, and reaching out for help when I was struggling.
I would also suggest finding Allen Carr's book "The Easy Way To Quit Smoking." There are online versions and paperback versions of this book available. People have mixed reactions to this book but go into it with an open mind. His book didn't necessarily make quitting easy for me but it did make me realize that smoking did nothing positive for me. Everything smoking did was negative.
The turning point for me was realizing that I wasn't missing out on anything positive by quitting smoking. There is nothing positive about smoking. It is all negative. Whatever struggles you may have early on are definitely worth it as life without cigarettes is awesome. It may take you a while to realize that but once you do, quitting becomes a lot easier.
Just focus on the positive benefits of quitting instead of focusing on the early negatives. Smoking sucks and life as a non-smoker is so much better.