Many people like you have quit smoking. You can too. Counseling, medications, and other supports can help you quit. The most effective way to quit is to have a plan and proper support. Pick a quit date, talk to a smoking cessation counselor and see if any nicotine replacement therapy or medications will help you.
Most people smoke for a few reasons. Before you set your quit date you need to prepare. Take time to think about when, where, and why you smoke. If you understand your smoking habits and triggers, you'll have a better chance at success.