Welcome to QuitTrain, Blur.
I can relate to what you are saying about having had multiple failed attempts to quit smoking. I had a lot of short quits as well and grew very discouraged.
What finally worked for me was joining and getting involved in a quit smoking forum like this one. I received a lot of support as well as knowledge about the addiction. Getting involved in a place like this is also a great way to hold yourself accountable in keeping your quit as well.
Allen Carr really helped me but different things work for different people. Reading about others' experiences in quitting can really help give you insight and help you prepare for what you might go through.
I don't think I really had a plan. I just read as much as I could about nicotine addiction in order to understand what I was trying to overcome, sought the support of others, and did what I could do to help others in return.
A key moment for me was accepting that there really is nothing positive at all that comes from smoking. It is all negative. I was not giving up anything positive at all. I was actually making big steps towards living a better life by leaving smoking behind.
Please feel welcome here. Everyone here has gone through what you are currently experiencing and we are here to help.