Hi Puylovely, i can see your are not overweight, and for the stature you have, your weight should be arround 55kg so you are ok, maybe you can focus on your body fat index to get the results you want and dont lose to much weight, if you dont like to work out, you can try other activities like, dancing, jogging, playing some sports, swimming, riding a bicycle or even if you have a a dog you can take it to a park and walk and play with him daily, a good advice is do something that you really like, you dont need to go to a gym to lose weight, and if you can do the activities with some of your friends it will be more fun, also your diet is something important you can check out some tips in this page www.facebook.com/NutritionistEly/, hope my answer help you