Here's a little article I worked on for The Bod Edit online magazine:

https://thebodedit.com/wellbeing/changing-habits/ 

I've recently developed a little project with Joe.ie and NiQuitin to help smokers quit the habit, in conjunction with their fitness team. It is a 10 week programme and you can see all the details here:

https://www.joe.ie/fitness-health/quit-to-fit-week-2-610786