* Seek support. Counseling can double your success rate, so consider joining a smoking cessation group. Ask your doctor or hospital for organizations in your , or call a quit-line like the National Cancer Institute’s at 877-448-7848.
* Prepare for withdrawal symptoms. Irritability, trouble sleeping, dizziness, and headaches may last for a few weeks. To help combat them, exercise, stay hydrated, get rest, and avoid caffeine and alcohol.
* Don't be discouraged by slipups -- they're normal. Instead, choose another quit day and get back on track. And once you kick the habit, stay smoke-free. One study found that about half of expectant moms who quit smoking light up again within six months postpartum -- even though second-hand smoke is a leading cause of SIDS, ear infections, asthma, and other respiratory problems in children. What's more, kids whose parents smoke are twice as likely to become lifetime smokers themselves. Says Dr. Healton: "Quitting for good is a gift that keeps on giving."