Need to lose weight and stay at my goal weight

Hi everyone, My name is Kimmy. I'm 25 years old. I would like to weigh 115 or less. I'm 5 foot 1 inch tall. I have (what I think) is a large frame. I currently weigh 129. My favorite actress is Christina Ricci. She weighs only 105 lbs. She's 5'1" too. Then I googled Kourtney Kardashian. She is 5'0" and weighs 115. I feel like this is so hard to do. Any advice. I used to have an eating disorder and sometimes will still binge and purge. I'm trying to be healthy but I hate eating healthy. I need help.