Can anyone explain this in astrological point of view?

[Sowkad]

Hi I am interested in learning astrology. I have birth details who had the addiction of smoking and now left suddenly because of his health problems. He started smoking in his early young age that is, 11 years and was smoking on a daily basis till July 2019. He never tried for quitting the habit. Then he came to know that he has blocks in his heart and the main reason for that was smoking. And there after surprisingly he quit smoking without any effort. How it happened? Can anyone astrologically explain the planets responsible for the addiction and Dasha which made him to quit? I am curious to know. Here are the details:
Dob: 15-04-1947 time: 01:05 am place: Kasaragod, Kerala.