Cold turkey is what works for most people but if you tried it and failed many times don’t be afraid to use nicotine replacement in some form, medication ( I used Champix and I’ve quit successfully 3 years ago) or even therapy. You’ll find online a lot of people who say that you only need willpower which is true if you have it but just depressing if you don’t making your situation after numerous quit attempts worse and worse.

There are plenty of websites with concrete plans and tips on how to do it, all of them with good advice but you have find out what works for you and what doesn’t. There are also some apps that can help you track your quit process, the health benefits of quitting and reward you.

Since you told nothing about your previous attempts if you had any or how long youve been smoking and why you want to quit I can only give some general advice:

Every day you don’t smoke is a win. You need to find out why smoking hurts you, why stopping smoking would help you. Choose a plan, stuck to it and if you fail learn from it.