Hi @houda, see these discussions where members are sharing their tips for quitting smoking.
- I want to quit smoking: What worked for you?https://connect.mayoclinic.org/discussion/wanting-to-quit-smoking/
- Quit-Smoking Action Plan: https://connect.mayoclinic.org/discussion/quit-smoking-action-plan/

It helps to have a goal and reason to quit. What motivates you to want to quit?