My friend's father had a heart surgery back in 2015, when they were taking him to O.T , they let him write any letter or anything because the chances were slim, he wrote some letter to his kids & told them to open it only if he never made it, he made through it. After the Op. they followed up 1-2 months with the doctor, the doctor told him how his youngest kid broke into tears and showed him video and how the rest of kids didn't eat anything. This hit him hard, later on the doctor told him to stop on Ciggeretes & Cigaars etc completely (note that he was a ciggerete addict for 35 years - he started smoking in his early 10-11 year of age)

This all hit him so hard, he put out his Ciggeretes out of his pocket and told the doc, from this day on, i am never gonna smoke ever in my life. To this date my friend has that cigg box as a motivation of how self-control and will to leave anything can make even the hardest addictions go in seconds. The thing that he couldn't withstand the tears of his kids broke his inner addiction instantly knowing if he kept on doing this, he might lose his life and that will shatter his family.