For those attempting to quit smoking once and for all this month, we hold a lighter up to you. All of those moments of frustration, cravings and mood swings will be well worth it once you're free of the fags.
"It's important to give up smoking because for every day that people continue to smoke beyond their mid-thirties, they lose six hours of life expectancy," said Professor Robert West from the Department of Epidemiology and Public Health at University College London.
According to ash.org, it accounts for over one-third of respiratory deaths, over one-quarter of cancer deaths, and about one-seventh of cardiovascular disease deaths in the UK.
So should you turn to e-cigarettes? Or should you quit altogether?
"Electronic cigarettes offer an opportunity and a threat," said Professor West. "Clearly if every smoker switched to an e-cigarette, millions of lives would be saved across the world.
"However, that is not what is happening and there is a risk that they could be used as a Trojan horse to undermine our efforts at tobacco control," he added.
"For the individual smoker they are a reasonable option to try in order to stop smoking."
Not convinced? Check out these undeniable facts about smoking...
15 Undeniable Facts About Smoking
FACT 1(01 of15)
Open Image ModalEvery cigarette you smoke reduces your expected life span by 11 minutes. (credit:Jasper White via Getty Images)
FACT 2(02 of15)
Open Image ModalThere are roughly 10 million adults who smoke cigarettes in Great Britain. (credit:Bertrand Demee via Getty Images)
FACT 3(03 of15)
Open Image ModalTwo-thirds of smokers start before the age 18. (credit:Flying Colours Ltd via Getty Images)
FACT 4(04 of15)
Open Image ModalThe proportion of the population who are smokers has decreased since the 1970s. A sixth of the population smoke now, in comparison to nearly half of the adult population smoking in 1974. (credit:Dražen Lovrić via Getty Images)
FACT 5(05 of15)
Open Image ModalMore men smoke than women.In Great Britain, 22% of adult men and 19% of adult women are smokers. (credit:ONOKY - Fabrice LEROUGE via Getty Images)
FACT 6(06 of15)
Open Image ModalMore than half (59%) of all adults report that they have never smoked. (credit:Dimitri Otis via Getty Images)
FACT 7(07 of15)
Open Image ModalTobacco smoke contains over 4,000 chemical compounds including: carbon monoxide, arsenic, formaldehyde, cyanide, benzene, toluene and acrolein. (credit:murengstockphoto via Getty Images)
FACT 8(08 of15)
Open Image ModalSmoking poses a huge risk to your cardiovascular system.It also steals some of your good cholesterol, increases the risk of clotting and temporarily raises your blood pressure. (credit:Jeffrey Hamilton via Getty Images)
FACT 9(09 of15)
Open Image ModalImmediately after you quit smoking, your lungs and other smoke-damaged organs start to repair themselves. (credit:Oko_SwanOmurphy via Getty Images)
FACT 10(10 of15)
Open Image ModalSmoking is England’s biggest killer. Half of all regular cigarette smokers will eventually be killed by their addiction. (credit:Westend61 via Getty Images)
FACT 11(11 of15)
Open Image Modal100,000 smokers in the UK die every year from smoking related causes. (credit:Shui Ta Shan via Getty Images)
FACT 12(12 of15)
Open Image ModalIn 2012-13 the Government earned £12.3 billion in revenue from tobacco tax. (credit:Jasper James via Getty Images)
FACT 13(13 of15)
Open Image ModalUsage of electronic cigarettes has tripled in the past two years. 2.1 million adults in Great Britain now use them. (credit:diego_cervo via Getty Images)
FACT 14(14 of15)
Open Image ModalA report by Dr Robert West of University College London found that e-cigarette use from popular brands is expected to be at least 20 times safer (and probably considerably more so) than smoking tobacco cigarettes. (credit:mangojuicy via Getty Images)
FACT 15(15 of15)
Open Image Modal7.9% of smokers have kicked the habit in the past year. (credit:AdamGregor via Getty Images)