I was smoking 3 packs a day, age 44.
My wife had quit when she was expecting our son. We had a three year old daughter. I would sit in my LazyBoy at night , my wife asleep on the couch, my daughter my now 3 year old son asleep on the floor, filling the room with smoke, thinking, " I'm not just killing me, I'm killing us all." I really hated being a smoker.
Then I had a heart attack. Mad rush to the ER, clot-buster drug, helicopter ride to the nearest big city hospital ,days in Intensive Care, a stent put in and on and on. ALL the doctors involved said THE reason was SMOKING. It Scared the living hell out out me. Haven't smoked since. That was 8 years ago.
Just keep remembering , you are doing the best thing you have ever done for yourself.
You can do it without the same kind of kick-in-the-pants that I got.
It is THE worst thing you can do to your body. Period.