I've been a 3+ pack a day smoker for 35+ years. Haven't had a smoke for 45 hours.
I’ll throw my .02 in here. You are doing it 100% correct. Keep track of how many HOURS you’ve been smoke free until you make 1000 hours. Because even though you may not think it, a bigger number gives you something to hold onto. Is it easier to give up on...1000 anything or 42 of something? 1000 has much more value than 42, no matter what you are scaling of value. And time has value.
When I quit drinking (01/17/1993 FWIW) I counted minutes. I’m not kidding. I forget at what point I went to hours but it may have been 10k minutes. Then I moved from hours to days and then days to weeks. I was at 208 weeks before I switched to years.
Hang on. Once you get the time in, you won’t quit because the time invested is so high the loss is horrible.
Keep us posted. All of us are praying for you.