EL PASO — Living with a chain-smoking habit that seems to run in her family, Erika Esparza fears being diagnosed with lung cancer but has failed to quit after many attempts even after seeking help along the way. “I’ve been smoking since I was 13. Both of my parents smoked about a carton a week each and growing up, it wasn’t a big deal to light a cigarette for them if they were busy. I started buying my own cigarettes at the corner store where my mom would send me to buy hers,” Esparza said. Esparza, 36, has cut down to about three cigarettes a day from a pack-a-day habit.