No, don't think that way, mind you I used to say I would never make 40 as I smoked from age 15, but here I am Mind you I finally quit 11 years ago after smoking 40 a day, thanks to vaping. Another very controversial subject, I won’t blab about it now.
My Mum died in January, she would have been 95 in May. She smoked from age 14 until she had to go into a home due to dementia and auzheimers and her smoking days were over. Then she put on enormous amounts of weight. I am certainly not recommending smoking though.
You are a lovely positive person, you will come through.