Congrats! You are approaching this very much like I did. When I received my starter kit, I had 4 unopened packs of cigs and one pack opened with a few left. I had the cigs and thought, just in case, but tried to go mostly for my volts. I finished those few cigs, opened one more pack that took me 5 days to finish. (I was at least a 1.5 PAD smoker) At that point I decided I would not be smoking the other 3 packs and put them away in a cupboard.
I still have those 'anxiety' moments, but I tell myself, "It's all good, I have my nicotine fix, it will pass, vape vape vape." These moments pass quickly. Keeping busy helps too. This forum was/is a GODSEND! Just knowing that everyone here had experienced the same things and made it through, a real confidence booster. And, you are so right, mindset is important. When you are ready, you are just ready!