Myth: You have to really (really) want to quit to succeed. (This is what we've been told and I don't believe it)
The truth is, you can quit without wanting to once you've decided to.
(This means not waffling on your decision)
Be willing to take the journey, don't fight it. Remember? It was your decision. You are simply honoring your own wishes by being willing.
First step after you've decided:
Not having any smokes around or access to them. making them as difficult to get as possible. You know? like having to go to get dressed and go to the store instead of going to the pack you have hidden under your mattress? This will give you some time to calm down and think about what you are doing instead of turning yourself into a zombie until you've smoked and then bemoaning your failure
The second step is to talk yourself out of smoking instead of into smoking when you crave.
That can be done very simply by saying "I don't do that anymore" out loud. You say it until the crave goes away. That is accepting your decision to quit and solidifying it in your mind instead of talking yourself into smoking.
You will also need to find other things to replace the dopamine release smoking created.
Temporary things might be exercise, laughing out loud, listening to music.Long term satisfaction might be finding something you love to do that gives you a feeling of satisfaction. (A hobby, volunteering, etc.)