All of those thoughts are going to come, you can count on it. This Big Plan doesn't say the thoughts will stop, that's not what it's about.
The point is, you have to 100% believe the BP for it to have any validity. Like dwtbd said above, anything less is planning to drink. I don't drink and I'll never change my mind.
That voice, those thoughts cannot get in the car without you. Can't walk in the store without you. Can't pull out the wallet without your consent. Can't pour the liquid in the glass and can't put it in your mouth. Thoughts are just thoughts. You make it go away by choosing to look at it and saying, "No," as many times as it takes.