You began smoking for any number of reasons:

To be cool

Fit In

Rebel

Relax

Lose Weight

as a social prop and many more reasons.

Now, you want to stop smoking for even more reasons:

You (and your clothes) smell

You can’t taste your food anymore

It’s not cool anymore

You’re tired of coughing and being sick

You don’t need to rebel against anyone

It’s too cold (or too hot) to go outside and smoke.

You want to live and be healthy!

You haven’t stopped smoking because: you think it’s hard.  You’re addicted.  Of course you are.  Cigarettes have over 200 chemicals to keep you smoking.  You can live without those carcinogens BUT YOU WON’T LIVE WITH THEM.  It relaxes you.  Temporarily it may but it deprives you of oxygen, raises your heart rate and constricts your blood vessels, and leads to heart disease and stroke.  DOESN’T SOUND RELAXING.  Your friends smoke. Well, be smarter than them and lead the way. 

DON’T BE A FOLLOWER.  You want to stay thin.  But it makes a mess of your metabolism and causes premature aging in all or your organs including and especially your skin.  The list goes on but you get the idea.