Saving money, smelling better and being more attractive are just some of the benefits of quitting smoking.
Today is National No Smoking Day - with the HSE encouraging people to take the first steps in giving up.
Their website - Quit.ie - has support, advice and an online quit plan.
Martina Blake from the HSE says they want to highlight the most effective ways of quitting.
She said: "We know from the evidence that using the right medication and using counselling support services you are four times more likely to quit.