need to lose weight! ugh

my names maureen, i'm 5'2 and 150 pounds my weight goal is between 110-120. at my skinniest i was 125
i am currently a smoker, i sit around the house and smoke all day. my goal is to quit and become a runner again i used to weigh between 120 to 130 when i was really skinny i have a large bone frame thats why i looked sooo skinny at 130 to 120 and i look normal weight now just a little chubby my measurements: 34-30-39 my old measurements when i was a runner 2 years ago : 32-26-35