Rosario said after her husband passed away was when she realized she was overweight.
"I had more time to focus on myself," she said, "and it was horrible."
Slowly, but surely, Rosario said her weight ballooned to 230 pounds.
"I'd get up two hours early to put together an outfit to come to work, and I put something on, I took it off. I put something else on, I took it off. I put something back on," she said. "It was just a nightmare and eventually I'd start crying."
Rosario said she often wore black as a way to hide her weight. She also hid herself from others.
"I didn't socialize, I didn't want to go out," she said. "I just felt like I was the fat girl in the crowd, and no one would want to dance with the fat girl or talk to the fat girl."
Rosario said she knew she needed to lose weight and she tried several weight programs, but they didn't work for her.
"I dieted all day, and then I didn't diet at night when people weren't around," she said.
Rosario said she always ate alone.
"That was a big thing. I always ate alone and I hate eating alone. I had no choice because everyone would make me feel bad," she said. "No matter what I was eating or how much I was eating, it was always wrong."
But, when Rosario said when she realized that her sons had lost their father, and were at risk of losing their mother to obesity, she said she had to do something.
Rosario had a lap band procedure performed in October of 2007. Since then, she has lost more than 100 pounds, and kept the weight off for over two years. Dr. Christine Ren, co-director of the New York University Program for Surgical Weight Loss joined Rosario on "The Early Show" to discuss Rosario's procedure and her weight loss success.
Zulma Rosario's Typical Day of Meals:
Breakfast:Yogurt and a small portion or tiny portion of oats
Lunch: Tuna fish with small salad also small portions
Snack: Cheese Nips or some dry crackers
Dinner: Small salad, small portion of dark meat chicken, and some olives
Or small portion of mashed potatoes and very small amount of meatloaf
Everything is portioned.