My Mom always told me I'm big boned because of my small wrists, but am I really small boned?

Im losing weight, and wanted to know if my goal was stupid since I thought I was Big Boned. I am 5'4 and 160lbs currently. I have small hands, and can wrap my thumb and forefinger around my wrist to where It barely overlaps. I dont want to try to push myself to lose the weight if I cant because of my bones. Help?